手機號碼跳船策略（中）

文：薯伯伯

上文提及 SIM 卡手機號碼是過時的科技，但卻是識別身份的其中一個有效方法，文章中提了一些場景去說明以上情況，建議先讀〈上篇〉，再讀這篇對策。

之前提出的問題，提及使用 SIM 卡時經常遇到的不便，例如要插入 SIM 卡才能收取驗證碼，而萬一丟失手機及 SIM 卡，即使有新手機，也要補領 SIM 卡後才能重新啟動 Signal 或 WhatsApp 等聊天軟件，費時失事。

最理想的處理方法，是使用「虛擬號碼」，英文叫 virtual number，或 VoIP 號碼。不需要 SIM 卡或電話線，只用透過服務供應商的 app 或網站，即能查看發至該號碼的短訊。

舉個例子，萬一你丟失了手機及 SIM 卡，你只要在新的手機安裝 Signal 或 WhatsApp，輸入虛擬號碼，然後登錄虛擬手機 app，即能收取驗證碼，極之方便，尤其身處外地之時。

一，虛擬號碼

虛擬電話通常是美國號碼，也就是開頭是 +1 字頭，成功申請後，這個 +1 字頭的電話號碼，將會成為 Signal 或 WhatsApp 等對外公開的號碼。坊間提供虛擬號碼的服務供應商雖多，但有些號碼似乎曾經過度使用，登記甚麼服務也會出現問題，另一些則要月費數十至百多元港幣，有比較之下就覺得不算太值得。

我測試最多的服務商有三家：MySudo、Google Voice 及 TextNow。我先說我最不推介的服務吧，不推介 TextNow，他們提供的號碼似乎有不少都曾經重複使用，登記服務時經常遇到問題，得物無所用，極不推介。

那就餘下 MySudo 及 Google Voice。兩者之間，我較為喜歡 Google Voice，但在這裡則會推介 MySudo。我雖然很想推介 Google Voice，但除非你身處美國，本身又有美國當地的手機號碼，否則申請過程頗為困難。即使用了 VPN 並連接至美國伺服器 ，Google 似乎偵測到是用 VPN 連線而拒絕服務申請。

比較容易讓大眾去申請的虛擬號碼服務，是 MySudo。下載該 app，必須要透過美國的 App Store，而不能使用香港 App Store。我一向很鼓勵離岸，所以除了銀行戶口要離岸，其實 App Store 也應該要離岸，這裡示範如何申請美國版的 App Store。

MySudo: https://mysudo.com
（這裡示範用 iPhone 設置，Android 手機用戶申請過程應該大同小異，請朝這個方向自己摸索一下。對了，其實很多時寫文章，就只是想開個方向，讓讀者自行探索一下，這樣會更有趣。）

申請美國版 App Store：

這部份最好在電腦上完成：

1. 使用 VPN，連接到美國伺服器。
2. 使用 Firefox 或其他瀏覽器，打開 https://appleid.apple.com/
3. 點擊 Create your Apple ID。
4. 輸入自己的資料，要填寫真實的電郵地址，要跟香港 App Store 的登錄電郵不同，這將是你的戶口登錄資料，稍後要收取一個驗證碼。
5. Country 選 United States。
6. 電話號碼，出奇地，可以使用香港電話，使用 +852，填上香港號碼，稍後要收取驗證碼。

完成以上步驟之後，轉用 iPhone 或 iPad：

1. 建議在手機上先開啟 VPN，連接去美國伺服器。
2. 打開 App Store，把原先的戶口退出。退出的方法，是點擊右上方的頭像，掃至最底，選擇 log out。
3. 登入美國帳號的資料，系統會顯示「This Apple ID has not been used in iTunes Store.」（這個Apple ID還沒有在 iTunes 商店中使用過。）
4. 選擇 Review，然後等待一會，畫面會一片空白，可能要等一分鐘。
5. 確保寫著 United States，選擇 Agree to Terms and Conditions（同意條款），選擇 Next。
6. Payment Method（付費方式）：選擇 None。
7. Billing Address（帳單地址）：寫個美國地址及電話，自己想，他們不查證。
8. 填完地址選 Next。
9. 如果出現 Apple ID Completed，這就代表你已經成功開設了 App Store 的離岸戶口了！

有關美國 App Store 戶口充值的方法，實在太多細節，請看看之前我寫的文章： https://www.patreon.com/posts/39576067

之後要用美國版 App Store 下載 MySudo：

1. 用美國的 App Store 戶口，下載免費的應用 MySudo：https://mysudo.com/
2. 用 VPN 連接到美國的伺服器。
3. 打開 MySudo，如果起始畫面一直沒有任何動靜，可能因為你還未連接到美國 VPN 吧。
4. 在 MySudo 的介面，選擇 Create your first Sudo。
5. 按 Next。如果這裡出現問題，可以嘗試重新連接 VPN，選擇另一些美國的伺服器。如果仍然出現問題，可能你以前曾經使用同一個美國 Apple ID 下載並申請過 MySudo，所以顯示出錯，要用一個之前沒有下載過 MySudo 的美國 Apple ID 再試一次。
6. 輸入名字，暫時輸入真名都可以，之後隨時可以改動，選 Next。
7. 關鍵步驟，選擇號碼，按 Create a Phone Number。
8. 選擇美國（其他國家也可以，按自己情況決定），輸入自己喜歡的三位數字組合，例如 314（314 是密蘇里州聖路易）
9. 選擇心水號碼，選定之後就不能更改了。
10. 之後會問能否取用咪高風，選擇不允許。
11. 選擇名字，這個名字要選個合用，因為之後修改較麻煩。
12. 之後問能否傳送通知，選擇「允許」。

MySudo 的免費版本，提供一個美國的虛擬號碼（也有英國號碼，但我沒有試用過），縱然這裡提供的虛擬號碼是免費，但亦可以接收認證短訊，能用作登記 Signal、Telegram 及 WhatsApp，亦能夠接受不少證券行、交易所之類的二步認證碼，但 VoIP 的號碼不能用作申請美國版本的 PayPal。

我申請的時候，MySudo 號碼是可以一直保留，但近日收到一些讀者回應，指 MySudo 號碼一個月不使用就會過期，我覺得也值得付費保留號碼，而且收費不貴，最便宜的收費計劃一個月才 US$ 0.99。

由於美國 App Store 不支援香港信用卡，所以最好最方便最快捷亦是較為安全的充值方法，是購買 Apple Gift Card（以前有分 iTunes 卡或 Apple Store 卡而且互不兼容，現在統一了，方便易明）。先到 https://www.apple.com/shop/buy-giftcard/giftcard ，選擇 Email，選擇 Other Amount，輸入 $10 試玩一下吧，在 Recipient/Sender Name 輸入自己（可以是代號）， Recipient/Sender Email 輸入自己電郵地址（要能接收訊息）。之後填信用卡資料時，只要確保信用卡號碼、日期及 CVC 正確就可以，至於 billing address 即使填了美國，其實也會通過的。可以支付的信用卡，例如獅子銀行信用卡、八達通 app 內的 MasterCard 等，比較容易出問題或被拒絕的是 DBS。支付後等一小時，收到禮品卡就按照指示充值。我自己最喜歡用這個方法充值，而不是把信用卡綁定在 App Store 內，方便易容，又減少信用卡被盜的風險。

🚫 注意：切勿把這個美國號碼登記接收銀行驗證碼，否則一些銀行以為你與美國有關，中了 FATCA（《美國海外帳戶稅收遵從法》，Foreign Account Tax Compliance Act）並要求你經常填寫表格 W-8BEN 申報，很麻煩。其他則沒有問題，只要不用來收銀行短訊就可以。

有一點必須留意，截至 2021 年 1 月 22 日，MySudo 仍然不能在 iPhone 與 Android 之間轉移，但該公司網站上稱會考慮加入此功能。而 MySudo 的備份一定要做得好，這個 app 用 iCloud 也合適（如果開 iCloud，其他大多數 app 的數據其實都沒必要同步，但 MySudo 有點例外）。如果沒有做好備份可能會失去這個號碼，所以要小心，做好備份。

二，把虛擬號碼融進日常生活

申請了並保存了虛擬號碼，確保 MySudo 的備份做得完美，那就開始逐步把虛擬號碼融進日常生活，取代用了十多年的電話號碼。

這部份還是留待續篇才寫。

注：我稍後（一月底）會在 Patreon 較私密的空間，再探討一下另一個我很推介的虛擬號碼 Google Voice 的申請及應用，但考慮到該文觸及 Google 的灰色地帶，所以設定為 Patreon 的獨家文章。反正大部份文章都是公開，有時設置一兩篇為 Patreon exclusive，我會原諒我自己的任性。

圖：Pixabay / mohamed_hassan

手機號碼跳船策略（上）：https://www.patreon.com/posts/46473280
手機號碼跳船策略（中）：https://www.patreon.com/posts/46491016
手機號碼跳船策略（下）：https://www.patreon.com/posts/46695482
手機號碼跳船策略（番外篇）：https://www.patreon.com/posts/46736756（Patreon 獨家文章）

🔑 【資訊保安文章整理，超務實長清單】 https://www.patreon.com/posts/46192115

▶️ 請訂閱 Patreon 頻道，支持不受干預的獨立創作及評論 | www.patreon.com/pazu

手殘絕對快於腦殘…不小心就點下去了…
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麻煩大家幫忙
留下優秀的一家人

他們來自波多黎各
父母親都是名校約翰霍普金大學的電腦碩士
(Master Degree in Computer Science - Johns Hopkins University at Laurel, MD)
他們著五個孩子，到全世界學習
Diego 17歲 Paula 13 歲 Alonzo 12 歲
Felizi 8 歲 Matteo 6 歲

八月，他們到了台灣
發覺這是一個非常適合的生活環境
有好的醫療、中文學習環境、電腦產業、和超好吃的水果
九月，Diego , Paula, Alonzo進入惠文高中寄讀
他們來了之後，學校形成一個很棒的英語學習情境
台灣學生都被迫用英文跟他們互動

星期五與台北歌德學院簽訂德國「PASCH夥伴學校」時
他們三個和學校弦樂社一起合奏卡農(見影片)
非常非常有教養的一家人

然而他們11月就必須離開台灣
因為他們來台灣的第五天
得到美國總公司的通知
他們收掉波多黎各的公司
爸爸Tommy失業了
所以這幾天，他在台中接一個英文家教
但經濟仍是問題

如果台中的朋友可以提供11月4日前的短期英文、西班牙文家教工作
或是提供長期電腦工程師的工作
麻煩和Tommy聯絡
以下是他的聯絡方式及完整資歷
(願意幫他們申請工作簽證更好)
他們很願意把台灣當成第二個家

PS
覺得政府說要把英文變成第二語言
最棒的方式是吸引國外的學生進入我們的校園
在人才即國力的年代
讓優秀的國際人才留在台灣
如果在台灣就有很好的英語學習環境
我們就不用一窩蜂跑到國外

聯絡TOMMY IRIZARRY-SIKES
Contact Information
Postal: Lane 400, Unit 11, Section 2, Nantun Road, Nantun District, Taichung City, Taiwan 408
Email: tirizar@gmail.com
Phone number: 0908 979 417
LinkedIn Profile: http://pr.linkedin.com/pub/tommy-irizarry/25/16/815

孩子的影片
Diego violin in a quartet:
https://youtu.be/ArkvU8Czmk8?t=37s

Diego violin Doble de Bach:
https://youtu.be/LYvnKwEueyA

Diego plays piano Clair de Lune:
https://youtu.be/CWCQMo5XJEY?t=14s

You can see some other videos in this YouTube channel:
https://www.youtube.com/user/tirizar/videos?reload=9

履歷
Summary of qualifications
Software developer for private industries and government agencies. Proficient web developer using classic ASP code, standard html, CSS and SQL Server for data storage. Web server administrator and SharePoint Power User.
 Android developer
 Certified Ethical Hacker
 Programming / Markup languages: HTML, XML, ASP, PHP, CSS, JavaScript/AJAX/JQuery, experience with Java, C++ and C.
 Mobile development: Java, Android, Android Studio.
 Technologies / Tools: IIS 6.0/7.5, SQL Server, Dreamweaver, Fireworks, Microsoft SharePoint 2007/2010, Microsoft Office suite including InfoPath, Access, Excel, Google Analytics, Google AdSense, Facebook Advertising, Microsoft SharePoint Designer, Inquisite Surveys.
Experience
Since November 2016-current
Enterprise Iron
Principal consultant – Web Developer
 Worked on the redesign efforts of the secure site for an international financial client. Applied responsive design principles using the Bootstrap framework while creating modular, reusable components of the code. Analyzed web page dependencies and identified legacy unused pages in the system.
Since November 2015-current
e-Nabler Corporation
Android developer – Professional Services Contract
 Developed Java code for the eMobilePOS and Tupyx apps for their Android versions.

Since October 2013-November 2014 TEK Systems
Web Developer / Web Master for the Department of Veterans Affairs in DC
 Continued supporting Veteran’s Affairs IT systems, including managing SharePoint 2010 systems and supporting databases. We identified issues with several databases including the management of IIS and SharePoint logs which were consuming many recourses and in a couple of occasions made the systems unavailable.
 Enabled and configured space monitoring tools in the SharePoint server farms.
Since November 2011-September 2013 Centuria Corporation
Web Developer / Web Master for the Department of Veterans Affairs in DC
 Developed a training registration web site that has been tweaked and used multiple times for different registration purposes, including new telephone system training, and scheduling software upgrades of encryption on laptops and upgrades to Apple Mac OS. The system uses a web front end and a SQL back end.
 Performed a routine web server maintenance tasks including monitoring traffic logs, identifying and archiving sites no longer in use, evaluating tools to assist in the management of the web server.
 Administered and migrated the FTP server from Windows 2003 Server / IIS 6 into Windows 2008 R2 Server / IIS 7.5. Configured new sites to support general operations within the VA Intranet.
 Maintained and enhanced legacy sites, modifying forms and reports in needs to be updated. This includes modification and creation of site in the Enterprise Content Management System used at the VA.
 Assisted other team members in various tasks including the creating or modification of surveys in the Inquisite system, and also the migration of some surveys into SharePoint, the modification of an Access application.
December 2001 – August 2011
Systems & System Software Solutions
Web Developer / Web Master for the Department of Veterans Affairs in DC
 Mr. Irizarry developed a web based application for the State Home Per Diem Office, which manages millions of dollars in payments to the state homes, to replace an Access database. The Access database was converted to MS SQL Server database and all data was migrated successfully. He created a web based interface using the standard VA intranet look and feel. He also developed a custom interface for each of the 3 roles (CBO, VAMC and VISN). Tools were built for the administrator to view current reports, view missing reports lists, and configure many parameters in the application. The VAMC report form was heavily automated using jQuery to perform auto calculations, increasing data validation and saving time to the users. After the application was launched users commented frequently about how user friendly is the new interface and about the time savings. Tasks that will take 2 hours to be completed now take 15 minutes. We have close to 12,000 reports in the system.
 There were various requests to the IT office for a web based training registration system of different types. Mr. Irizarry developed a registration system which was later used for the following projects: Take your child to work day, New Telephone system training registration, Laptop Hard Drive encryption software upgrade among others.
 Developed an alternate cascading style sheet for SharePoint 2007, converting the out of the box look and feel to the Department of Veterans Affairs standard website look and feel.
 After one of the VA’s laptops was stolen Mr. Irizarry worked to develop a Risk Assessment web based application. He created an Excel template which management will upload to an FTP server with information and details about remote employee access and the sensibility of the data accessed by those users. He also created VB Scripts to validate those Excel files an upload that information into an MS SQL database. Reports for upper management in Central Office were then created which prompted management to enforce stronger security measures, like hard drives encryption. In total more than 500,000 records were processed for the reports.
 Administration of IIS 6.0 web server and MS SQL Server databases used in our websites.
 Wrote migration scripts to move IIS 6.0 sites into a new IIS 7.5 server
 Designed, developed and maintained multi-tier applications for the Veterans Health Administration. Most of the sites access a MS-SQL Server database, use cascade style sheets and ASP server side processing. The sites were developed using Adobe/Macromedia tools like Fireworks, and Dreamweaver.
 Installed BlackBerry wireless email devices and trained users on the basic device usage.
 Web developer for the Department of Veterans Affairs. Redesigned and modified web pages to make them compliant with the Section 508 guidelines. Tested validation tools that verify if web pages are “Section 508” compliant. Section 508 are guidelines that must be followed by all government agencies and points to which government resources must be make accessible to people with disabilities, i.e. blind, deaf, etc.

November 1999 - December 2001
Compaq Computer Corporation
Consulting Associate II
 Design and develop the XOOB (Xevo out of the box) Web user interface. XOOB uses COM+, ASP, XML, XSL and JavaScript to provide a web user interface to the Xevo Workbench Platform based on the role associated with the user. Development was done using Visual Studio tools, IIS and XMLSpy.
 Develop Active Server Pages for the Helpdesk solution for the PrimusASP project.
 Design and code an ActiveX component that serves as the bridge between the Compaq ASP Framework and the Infranet billing system for Primus. Supported integration with other components of our framework.
 Design, code and troubleshoot software for the Primus ASP (Application Service Provider) project. Software includes a DLL and various VB programs that run as NT Services, which are key components of the Compaq ASP framework.
June 1998 – October 1999
National Security Agency
Computer Scientist
 Mr. Irizarry worked for as a software developer for the TOKENEER project. TOKENEER is a test platform for the integration of smart cards, biometrics (fingerprint, hand, iris and facial recognition) and a public key infrastructure. Development was done on Windows NT workstations using Visual C++ and Visual SourceSafe for source control. Mr. Irizarry used an SDK to capture and match fingerprints against a database of fingerprints. He also created software to created some statistics of “False Accepts and False Reject Rates” of the fingerprint. He also worked with other team members to identify which fingerprints characteristics could affect those rates. He then added error detection functions to the fingerprint recognition software to identify corrupted files of fingerprint images
 Conducted research for methods to add security services to an off-the-shelf computer.
 Developed C code to process fax data on an UltraSparc/SunOS station.
 Wrote software to generate a daily report of traffic load in a telephone switch by analyzing the switch logs.
Education
Certifications:
 Certified Ethical Hacker – 03/28/2014
Master Degree in Computer Science - May, 2001 Johns Hopkin