I am looking for a professional developer to design an auto-reply tool for new buy leads and inquiry on at every day. Your role is to build a system that sends both an automated message and email reply to potential clients. Take this tool/sofware just like the robit. My requiremen...buy leads and inquiry on at every day. Your role is to build a system that sends both an automated message and email reply to potential clients. Take this tool/sofware just like the robit. My requirement below : 1. Auto reply my every inqury from buyer with my own information/message. 2. Find our item buying lead everyday and reply to all relative buying lead automatically by using my own information. 3. Send the same reply message to buying lead customer email address as well.
We are searching for a remote online customer service representative to join our esteemed boutique guesthouse located in Japan. This opportunity is ideal for a foreign individual proficient in Chinese, eager to be immersed in a multicultural work environment while providing superior service to our guests. Key Responsibilities: Address customer inquiries through email, phone, and online platforms promptly and professionally. Assist with booking and reservation queries, offering information regarding availability, rates, and amenities. Manage complaints, providing suitable solutions and alternatives within a set timeframe; ensure resolution through follow-ups. Collaborate with the on-site team to guarantee a seamless guest experience. Maintain a positive, empathetic, and professiona...
...建议和提案。 --- I am looking for a skilled freelancer to develop a SIEM and SOAR platform for my cyber security needs. The platform should have the following features: - Log management and analysis capabilities - Efficient threat detection and response mechanisms - Automation and orchestration functionalities While I do not have a specific platform in mind, I am open to recommendations from the freelancer. As for the budget, I am looking for a solution that falls within the range of less than $3,000. Ideal Skills and Experience: - Experience in developing SIEM and SOAR platforms - Proficiency in log management and analysis - Knowledge of cyber security threats and response mechanisms - develop the platform using amy programming language If you have th...
找一些高质量的中国网黄推主（比如说粉丝量高，浏览量也高），然后关注 就可以了，工作内容简单，按照关注的数量来结算报酬
Time: 2023/03/27-2023-/03/29 Address: Near Delhi Zoological Park Mathura Road Delhi arrangement business cards, publicity materials, leave the information and contact information of the intended customers, contact the merchants online on the spot, and give feedback. 3. One representative is required, Chinese/English/Hindi, located in New Delhi.
嗨 Chetan T., 我想要邀请您来完成我的项目。更多细节我们可以稍后通过聊天交流。 First: Because it is a relatively new store, and there are many sales restrictions on products, I need you to find products with sales rights Second: When you select products, you need to add $1.2/piece of cost Third: I hope that the type of products should be toys, not clothes, not included batteries, not food Fourth: Roi is about 30% Fifth: Purchase from wholesalers who can provide invoices Last：the product has a good sales volume. I want to see how the product you choose is. Then decide whether to continue. Thanks,
...ripro使用bootstrap框架开发的，所以仿站也需要使用bootstrap进行开发，自适应这一块做好一点 3.要求html,css,js代码可读性高，代码简介，最好可以带上注释 Professional front-end developers are required to be familiar with bootstrap. Project requirements: 1. Ripro theme is a WordPress theme. Because WordPress can not meet our use needs, we have made the back-end program with ThinkPHP. Now we need to imitate ripro theme to adapt our ThinkPHP back-end. (ripro demo station address: ) 2. Ripro is developed using the bootstrap framework, so the imitation station also needs to be developed using bootstrap. Do a good job in the adaptive part 3. The HTML, CSS and JS codes are required to be highly readable, and the code introduction can be annotated
我们是一家位于中国上海的高科技公司，我们希望在美国招聘美国汽车芯片采购经理和销售经理。此人必须是美国人，在美国芯片行业拥有10年以上的工作经验，并曾担任过销售，采购或汽车芯片研发等职位。我们公司现在在美国弗吉尼亚州设有商业代表处，目前正在德克萨斯州奥斯汀开设一家芯片技术公司。我们的工作语言是英语。
我们需要一位全栈开发者（full stack developer)帮助我们开发一个在微信（WeChat）上运行的小程序（mini program），它的核心功能有：注册登录，用户信息展示和真实身份认证，有趣的活动发布及报名，创新创意idea发布，加好友即时聊天，推荐转发。 It includes 4 main pages: list: all the registered entrepreneurs listed here, according to their credit, latest log-in time,and etc. when clicked, other users can browse this entrepreneur’s detail info, and follow him/her, and chat with each other(registered users only). list:display the startup ideas and projects clicked,other users can see what's about,and know what this user needs, for example, a CTO, CMO...also,any user can give feedback to this idea or project. page:display some interesting activities, user stories and etc.. page:personal information, including id, contact, education and job
I need to find a great writer. The abilities he/she must possess are: 1. Proficient in SEO related knowledge 2. Have many years of writing experience 3. Must speak English and Russian (or only Russian), and can write Russian articles 4. Research on topics/themes 5. Need to be familiar with every product of our company. Need to know the functions and features of each product, and under what circumstances the product will be used. You need to clearly know how each product is used, and you can write out the operating steps. What I can provide: 1. Order at least 5 articles per month 2. 20-25$ per article of 1200-1500 words 3. Provide article structure, keywords, and articles on similar topics for your reference If you meet the above conditions, please actively communicate with me, I am ...
1. Can import 500 ip proxy addresses at the same time 2. Can upload picture folder 3. You can upload text files 4. Each different ip address corresponds to a different facebook registration entry 5. Each ip address can be replaced or deleted at any time 6. After successful registration, the avatar will be randomly selected from the picture folder, and the name will be randomly selected from the text file 7. Automatically apply through friends, and the time interval for applying through friends can be set by yourself 8. Integrated management of all account messages and comments 9. Real-time update statistics of the number of all friends, like, share, and comment 10. You can clear all accounts and all information with one key, and then start again, in a cycle
联系方式：请打开issue链接，直接在github上与aelf的开发者交流。 issue地址： 对（int，IChainContext，Transaction，Timestamp，CancellationToken，Address）进行重构，这是60行代码和6个参数的单位。解决这一问题将使我们的代码库更易于维护，并提高更好的代码中心的保持单元接口小准则评级！ 以下是本指南的要点： 1.定义 将每个单元的参数数量限制为最多4个。 2.为什么？ 保持较低的参数数量可以使单元更容易理解、测试和重用。 3.怎么做 通过将相关参数分组为对象来减少参数的数量。或者，尝试提取部分需要较少参数的单元。 您可以在构建可维护软件中找到有关此准则的更多信息。 祝您好运，编码愉快！
...developer account, and Aurora account to use our. We have our own main website platform. In order to promote our main website platform, we need to make a lot of vest apps for a long time, and then guide users to our main website game. Therefore, the function of the app you make is only for the reviewers. Just to deal with the review, after the app is put on the shelf, directly open the given url address to the user through the webview....
...group (also called multi-person chat) Need to be green software without installation and direct operation, to minimize the background operation QQ exists in the discussion group will automatically retreat, must be seconds back Details: If the QQ of the login protocol is bound to the security device, you need to pop up the phone verification or QQ security center verification to ensure that you can log in and use normally. After the login is successful, the current status is displayed next to it, and then you can start and stop the button. After starting the run, the list of historical messages below shows that you have quit a discussion group. The software needs to be a sharing mechanism: It needs to be shared with 2 people to use the software for free for 3 days (this can rec...
To develop OTD KPI reports on JobBOSS: Calculate OTD archive rate by daily, weekly, monthly, there are two conditions need to be fulfilled, one is quantity delivery fulfillment, the delivered qty should equal to requested qty, another...monthly, there are two conditions need to be fulfilled, one is quantity delivery fulfillment, the delivered qty should equal to requested qty, another condition is delivered date, the delivered date should equal or be earlier than promised day. Scope: all closed SO which closed on current day, current week and current month. Set the OTD target If SO was delivered earlier on last month , then the OTD need to be included in last Month’s OTD KPI. by SO + Project number Use Chart display the OTD by day,week and month. Data source: ERP SQL DB...
...add new features under the existing App architecture, and the backend API program has been developed. To implement the function: 1. Personal information: !AqPM7dbV2A19gQsDiRtydgboa-TT 2. Appointment consultation: !AqPM7dbV2A19gQ1hUcdb7QlMDpIX 3. Albums: !AqPM7dbV2A19gQ_NccI-ke6PWFks Before writing the above API, you need to log in to get the information. The following is the login teaching (without writing this section) !AqPM7dbV2A19gQc136QJKAVDrPEd...
This web site should be developed in Java, MySQL, JavaScript(Angular). 需要建一个ElasticSearch数据Screener 网站/网页。这个网站分用户端（user interface）和网站管理员端 (admin interface)。 在用户端用户可以输入/选搜索的数据域名（data set name）， 任意搜索组合（screener/search criteria）， 按“FIND”按钮， 搜索结果以列表的形式显示出来。 在网站管理员端， 管理员可以create (data set name + ElasticSearch URL). 管理员可以查看和修改，所有的(data set name + ElasticSearch URL) 数据记录， 也可以删除单个的数据记录 用户可以在网站注册。注册成功后， 会收到确认（confirmation）电子邮件. 用户需要点击确认链接去确认账户建立。 用户可以保存自己的search criteria 在数据库. 用户登录网站后， 可以选择已经保存的的search criteria， 再按“FIND”按钮， 搜索结果以列表的形式显示出来。 ElasticSearch is an open source data search product. URL for reference: The end product will looks like yahoo stock screener (). Please see the attached word document for requirement details
English Version of the...providers and clients. 4. Familiar with Chinese source code and regulations. 5. Ability to develop the apps within 5 months max. Context: The basic outline of the app would be into 3 features where “client” will chose a service from “provider” 1. Find an available nearby provider within 1-3 Km: a timer will calculate the fee and the distance. 2. Book for a later time: A fee according the time required. 3. Awarding Service: a simple wall where Client can post a service request 1 per month detailing fees, service description, address/location and upload JPEG then gets notification. 4. Simple rating system for both providers and clients. We are willing to pay market price, whether fixed price or an Hourly rate as per m...
在附件里所列的高校，分别登陆该校的院系网页搜集所有可用的教师email，请见附件的Excel sheets。工作表1为高校清单、工作表2为搜集范例。
...可以多选， 样式 参见： https://www.amazon.com/Apple-iMac-MK142LL-21-5-Inch-Desktop/dp/B01M5AOYUG/ref=sr_1_2?ie=UTF8&qid=1480081131&sr=8-2&keywords=imac&th=1 4. 这个主题是我们喜欢的类型， 需要修改的地方如下： （1）图片要缩小到整个页面宽度的1/3 （2） 产品的导航栏要放到 产品的图片上面，用户可以知道自己在哪个产品归类的下面 （3）结账页面参见小米官网， 可以添加多个送货地址， 移除默认主题的BILLING ADDRESS （4）可以让客户直接微信付款， 微信的连接方式我们可以稍后讨论 （5）连接我们的国际信用卡付款插件，这个可以允许客户直接用信用卡付款: 或者你们目前有做过国际信用卡支付的插件 或者 集成 （6）是否能迁移我们目前的客户信息， 从我们目前的网站， 如果不行也不强求 （7）支持微信快速注册， 在结账页面需要填写个人信息， （8）加快网站的访问速度， 因为涉及到一些插件和字体的访问是在国外， 希望全不能在本地能调用，其中包括后天的访问， 现在真的很慢。 （9）网站的安装更新问题， 因为貌似一次网站中毒了， 基本丢失所有资料， 辛亏有一个备份 （10）网站的持续维护， 如果能够合作， 网站网站的更新，重建， 希望能够提供一个长期的合作关系，
I want to find a xrumer / Scropbox SEO software management experts: 1. Proficiency xrumer / Scropbox SEO software， collect and organize resources and released 2. can independently develop Xrumer MOD, collect resources backlinks, backlinks release. 3. Skilled google SEO, site keywords planning, 4. Software Management Time: per month
I need an IOS developer who knows chinese urgently. Project is very urgent as well. 功能概览： 博友通公众服务： 真人美女秘书服务 博友通旗下的美女客服，会以短片的形式，为用户提供服务 起床叫醒，上班打气，博彩祝福，睡前晚安等指示，只要用户在App上设定，我们都会在该时段以影片方式推送到App上 盈利计算机 添加不同娱乐城 手工 (或API) 输入数据，如当天存取款红利等数据，系统以图表做总结 (时段) – 类似记账App功能 Timeline : 50days.
radiator， which used in house, used in winter, the sourcing for request this produce must out of china
0 自由职业者 正在查看 0 全部 观看 项目描述： I need 100 short poster job texts. 3-5 words one text,like these: "DREAM JOB AHEAD, IT’S TIME FOR A NEW JOB, WE ARE HIRING, GLOBE JOB SEARCH, YOUR ARE THE ONE, I LOVE MY JOB, FIND GOOD JOB, NEW JOB NEW LIFE,"
I am a chinese i am outside chinese now.I can not log in my chinese online bank account outside i need a chinese friend help me buy a virtual product from is a long time project.i need to buy a lot of of them are software.I need you to add the chinese product seller's help me pay him through chinese construction online bank.I want a long time business with time you need to help me buy a virtual need to pay the chinese seller can use baidu to check the Exchange rate. 我也是一个中国女人，我现在不在国内，在美国。我不能在国外登陆中国的网上银行。所以我需要一个中国朋友帮助我买一个虚拟物品，这是一个长期项目，我需要买很多东西从国内。大多数都是虚拟物品，类似软件,和其他服务。我会给你卖家的qq号码，你需要加他然后帮我付款。使用你的国内网上银行，你最好有一个建设银行的网上银行。我经常买很多东西，如果找到合适的人可以长期合作。你会得到一个好评和赚到一些差价。这是一个非常简单的项目，你只需要帮我加一个中国卖家的qq然后支付他，然后截图支付证据，我就会给你付款。
7 Desires 国际是专注在时尚娱乐行业的模特儿管理和活动组织公司，他们还拥有摄影和视频制作团队。 7 Desires 国际可以帮助您宣传产品、品牌或让西方模特穿着您指定的衣服或配饰拍照和制作视频，供您的网站使用。 只需把您的货物样本寄送到欧洲或美国，剩下的事情就交给他们(7 Desires )了。 价格非常优惠！ 今天就去访问：7desiresinternational.c o m 吧 CHINESE FREELANCE ONLY: WE NEED TO FIND CHINESE FACTORY OR RETAILERS INTERESTED IN OUR SERVICES. Apply only if you can really make us close a deal with a company willing to send the goods in Europe to realize photos advertising with our models. If you are not able to finalize a deal please do not apply or you will not be paid.
...Click the '100-spin' button three times; each after the button clears and allows for the next click. 4. Click the 'statistics' button and view the page. 5. Look either at the top row of 5 numbers or the bar graph and look for a 'zero' above any red, black or the green zero. The top five numbers will read 'Never Hit' and show the number(s) if any that have not been hit in the last 300 spins. 6. If no numbers show, then move cursor up to 'Game Options' and a drop down line will show 'table games' then follow back to the euroroulette table and that will reset spin count/history and start the spin process again. 7. If there is 'one' number, not 'two' (two numbers &#...
Hi, We are a young fashion company targeting for young girls. Here are some backgrounds about us: our head quarter is based on Philadelphia. We have production in California and a warehouse in Guangzhou. Currently we have 4-5 employees responsible for packing and shipping. We are growing really fast: since last September, our growing rate is about 5000%. Our order volume is about 3,500/month. We are looking for helps about building a new warehouse in China, and buy items we like in Taobao, sourcing in open market in China and help us to ship. If you interest, please send an email back to us, we are looking forward for your reply. 您好， 我们是一家年轻的时尚公司，产品包括服饰，配饰，主要面向年轻的女生。下面是我们的基本信息： 我们的总部设在美国费城，我们在加利福尼亚州有生产点。我们在广州也有一个仓库。现在我们有4到5个员工帮助我们封箱和运输。目前我司成长的非常快，从去年九月开始，增长率大约为百分之五千。我们希望...
Sip client with the pjsip or other sip stack. Need the cloudy Address Book accroding to the API. Need the presence status. The project should be finished in 1 month.
I have a list of English company names (156 names), I will need to find their name in Chinese, also their phone number. 我有一份英文公司名单(156个)，需要找出他们的中文名，联系方式等信息
Our client has a news website based on Wordpress and it has a mobile adapted plugin already. What we need is an app to be wrote and submitted to the apple store and Android marketplace: Requirements: 1) Submitted successfully and be able to be searched by key words; 2) Be able to push messages to those who has installed ...news website based on Wordpress and it has a mobile adapted plugin already. What we need is an app to be wrote and submitted to the apple store and Android marketplace: Requirements: 1) Submitted successfully and be able to be searched by key words; 2) Be able to push messages to those who has installed the app; 3) Be able to read basic statistics for the administrators. The website address is : [dot]com (Pls replace the [doc] with "."...
...OpenVPN charging program, iOS & Andarid & Website (or use the Hostbill billing system) OpenVPN charge recharge based procedures, similar to VPNExpress , The implementation of user registration, recharge (Alipay & Paypal), VPN account settings, password changes. The user account, close to expiration reminder, enterprise information submitted invoices, invoice mailing address submitted. The OpenVPN function to read, including account surplus time, monthly bandwidth query, history of bandwidth usage information. The interface is succinct, professional, similar to Bootstrap. We have a billing system Hostbill, so if you can develop Hostbill Api, you can not have the development of Web. 一个OpenVPN收费程序, iOS & Andarid & Website(或者使用Hostbill账单系统) 基于OpenVPN的收费充...
...便学生找到英语家教，要求中英文对照，我们现在有一个网站，可以参考 新制作的网站要求全面升级，改变运营模式，变为以外国家教付费模式，外教在我的平台发布自己的信息，后台可以更新图片，文章，上课时间，使用的教材，学生评价，等。 中国学生能够方便，免费的得到外教的联系方式，联系外教。 I need to upgrade my current web site this would be a bilingual site Chinese and English, a platform for native English tutor easily find Chinese students in all cities China. Tutor will pay for us, they can start an account and biuld a online class on our site, Chinese students can easily find native English tutor on our site. I have no idea about the budget, so ignore the price below, feel free to offer, thanks
主要指导elastix asterisk 的安装配置工作，熟悉Asterisk的模块（包括体系结构，配置文件，Log日志,History）,能重新打包ISO文件
大家好，我请求大家开发一款，可以自动刷产品收藏量的小软件。 具体的流程是： 1.在目标平台上注册买家账号（注册邮箱时候必须要求hotmail或者gmail，我可以提供，邮箱不用验证！！）， First Name: Last Name: Email: Password: 2. 收藏我店铺里面的指定产品，自动点击SAVE 按钮，增加收藏量 到自己的收藏栏里。 3.换号。重复第一步，第二步。
首先需要你有1个之前注册的Facebook账户 最近有登陆过 否则不能成功的 先登陆 注册一个账户 然后去邮箱 复制 recovery code 然后有2个邮件 另外一个可能在垃圾箱里 然后点击 set up passdword recovery! 输入 recovery code 点击 continue 然后 continue with Facebook 如果成功后会得到6000 个Stellars 点击send 然后 send to 之后的地址填gNME1jThn3XfbGMwNUSWHqSTt1Co8d4N3X amount 6000 发送 然后截图自己的地址 回帖 自己的地址在Receive 下面Hide your Stellar Address
...in American,Canadian or other countries websites. Contact me through $0.4 per post, and it also depends on your will pay you according to your also look for long time cooperation. Details: - You must be fluency in English, and post the articles to local English Forums(or blog,websites,SNS) in order to introduce our website or products. The articles should contain our website address or URL Link. - The websites you are going to post should be in high rank with Google,Yahoo,Bing. - You should post the articles under category of accounting servicesserviced officeincorporation services or related. - You cannot post the same article under one channel or forum. - The websites should be accounting servicesserviced officeincorporation servicesrelated. - The post should not be
我有一个持续工作，之前与之相关的项目为'woocommerce address fields'
外形: 参考APPLE TV,FIRE TV,PS4等 硬件参数参考（可以不一样，但总体性能不能差）： 处理器:Cortex-A9,双核1.5GHz GPU:Mali-400, 双核 400MHz 内存:1GB DDR3 用户内存：4GBeMMC 蓝牙4.0 无线局域网:2.4GHz/5GHz 802.11 a/b/g/n OS: ANDROID 4.3 或更高 我希望硬件是可以直接买到的成熟产品，然后可以刷写自己的ROM到里面去。 因为我自己做硬件成本太高。 简单来说，我需要成品稳定的ANDROID BOX，然后里面的ROM可以自己编译刷写。
我有一个很有创意的app想法，我觉得这个app软件所带来的效益远远大于app软件本身，我想和你合作。希望能和你共同讨论。对于这个项目的经费我觉得咱们可以商量。这是我的邮箱zhangfei199007@，希望能和你讨论 。
...to evaluate and discuss a log-in report from my MS Office 365 account. The report includes several IP addresses outside of my own, and I am concerned these may indicate unauthorized access. Key requirements and responsibilities for the project include: - Analyzing the report: Understanding and interpreting the log-in report to identify all IP addresses associated with the account. - Identifying discrepancies: Determining the reasons behind the presence of multiple IP addresses not connected to my usage. - Providing insights: Advising on the potential risks, implications, and actions that should be taken in the case of unauthorized access. This role requires a freelancer with: - Proficient knowledge of MS Office 365: To effectively navigate and interpret the log-i...
PART A: Preparing for Research Report Use a Q-chart as a tool to help you develop at least 10 research questions that you may want to explore. Try to create a variety of different types of questions from the different quadrants of the Q-chart so that you can consider questions from different ang...is not the same thing as the topic of the novel. For example, love may be a focus in your novel, but the theme might be something like “Love, if taken to extremes, can have negative effects rather than positive consequences.” What idea or ideas do you think the author was trying to explore in this novel? State the theme in a complete sentence and find at least three specific examples that show how the theme develops in your novel. In other words, find places in the novel...
I'm currently seeking a qualified freelancer who can assist me in creating a VPN tunnel. The main goal of this project is to mask my local IP address while sending emails for enhanced privacy and security. I require urgent completion of this task, hence a swift turnaround would be appreciated. Ideal candidates should have a deep understanding of VPN tunneling and networking principles, coupled with the ability to deliver under tight deadlines. I need to send email without show my local IP. The tunnel must connect to a previous (validated by me) IP socks4/5 proxy list. It will try/connect to first IP from txt list and remains pinging it. If connection closes, it will try to connect next one.... I use Windows 10 OS and I need like .exe app.
I need Lambda/Python code to update the Log Subscription filter. Chat GPT doesn't work. The problem is when you "put_subscription_filter" it creates the second one but doesn't delete the first one. I need the code to delete the first data from STack and create a new Filter. Everything running from Cloud Formation stack. (In example I attached there is no delete the previous filter it is creating the second one)
...initiation to execution, monitoring, and closing. Responsibilities: - Collaborate with stakeholders to define the project scope, goals, and deliverables. - Develop comprehensive project plans that include timelines, budgets, resource allocation, and risk assessments. - Lead and motivate project teams by delegating tasks and ensuring efficient workflows. - Monitor project progress, identify and address roadblocks, and make adjustments to the plan as needed. - Communicate effectively with all project stakeholders, including clients, team members, and executives. - Manage project budgets and ensure all expenditures stay within allocated limits. - Maintain accurate project documentation to track progress and ensure clear communication. Qualifications: - Bachelor's degree in ...
As the owner of a SwiftUI app, I'm seeking a skilled developer to enhance the performance and stability of my application. Key Tasks: - Share Crash Report: I will share the crash log in a text file so you know what caused the app to crash. - **Performance Improvements**: The app currently faces issues which affect its loading times. I am looking for a professional who can optimize the app to make it more responsive and efficient. - **Bug Fixes**: The app is experiencing some bugs that are affecting user experience. I need these issues to be identified and resolved promptly. The ideal candidate for this project should have: - Strong experience with SwiftUI and iOS app development - Proficiency in debugging and resolving performance issues - Proven track record of successful...
I require a skilled developer to address my Breakdance Builder issue urgently. Here are the specifics: - I am currently unable to retrieve specific content using the existing query to get taxonomy (Meta Box) content in Breakdance Builder. - I prefer the method of rewriting the query from scratch. This way, we can avoid any potential issues within the existing query and ensure the accurate retrieval of specific content. Time is of the essence for this project, so I need someone who can commit to completing it ASAP. Ideal Experience: - Proficiency in Breakdance Builder - Strong background in PHP and MySQL - Previous experience with Meta Box - The ability to work quickly and efficiently Please get in touch if you have the necessary skills and can commit to this project immediately.
I am in need of an experienced React Native developer to build a mobile app compatible with both Android and iOS. The primary functionality of the app will be QR code generation and scanning. It needs a way to generate unique QR codes and accurately scan them. User authentication is also essential to this project. The app should allow creating users with login ad password and allow them to log in to scan qr code. Ideal skills for this job: - Proven experience with React Native - Knowledge of QR code generation and scanning - Experience building secure authentication systems
