Tag Archives: phone

美國的電信商提供 API,讓第三方透過 IP 就可以知道你的真實身份

前陣子的報料,美國的電信商提供 API 給第三方,讓第三方可以用 IP address 查出你的真實身份:「Want to see something crazy? Open this link on your phone with WiFi turned off.」,像是這樣: These services are using your mobile phone’s IP address to look up your phone number, your billing information and possibly … Continue reading

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Amazon Device Farm 支援讓使用者直接連上去 debug 了...

Amazon Device Farm 推出這樣的功能又朝著設備租賃服務更進一步了:「Amazon Device Farm Launches Direct Device Access for Private Devices」。 Now, with direct device access, mobile applications developers can use individual devices in their private test set as if they were directly connected to their local machine … Continue reading

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b-mobile 的おかわり的速度

tl;dr:真的很慢 +_+ b-mobile おかわり 是先前因為 eplus 需要手機簡訊認證而辦的日本門號,想說剛好進日本也可以拿來用... 可以參考「Re: [問題] 日本旅遊有低門檻手機認證的方式嗎」與「b-mobile おかわりSIMの速度実測・レビュー・評価まとめ【9月】」。 實際跑了 n 次測速,除了深夜與清晨的速度比較快以外,其他時間下載大多都在 1.x Mbps 左右,拿來跑 Line (包括 Line 語音) 還可以,刷有圖片的服務就頗慢了... (像是 Twitter 或是 Facebook),如果是影音服務的話就很慘了 XDDD 是剛好可以拿來練習 Git 離線作業啦 XDDD 但之後如果要來玩的話,應該還是會辦張吃到飽不限速的 SIM 卡吧...

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手機上用 FPGA 的想法...

在「Apps with hardware: enabling run-time architectural customization in smart phones」這邊看到去年就有論文在討論在手機上使用 FPGA 的想法... 的確現在 FPGA 的價錢其實是蠻平價的了... 除了透過 GPU 加速外,FPGA 聽起來也是個不錯的方向 @_@ 最直接的例子就是 AES 運算來看,可以看到比現在最快的實做快了半個數量級,大約三倍?(跟支援硬體加速的 OpenSSL 比,看格子大約是半格,也就是 100.5,約 3.16 倍)。 而如果是純軟體的應用,有些會差到四個數量級... (萬?)

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利用手機的 sensor 取得 PIN 碼

把 side-channel information 配合上統計方法就可以達到 74% 的正確率:「Phone Hack Uses Sensors To Steal PINs」。 透過 browser 的 javascript 就可以拉出這些資料,然後利用這些資料去猜你的手機 PIN 碼: Researchers from U.K.-based Newcastle University created a JavaScript app called PINlogger.js that has the ability to access data generated by the … Continue reading

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透過手機螢幕上的餘熱猜測 PIN 碼

利用手機螢幕上的餘熱分析可能的 PIN 碼:「Heat traces left by fingers can reveal your smartphone PIN」,在輸入完 PIN 碼的 30 秒內的準確度都還是很高 (80%): The report further revealed that if the thermal image is collected within 15 seconds of a PIN being entered, the technique is accurate … Continue reading

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Nokia 3310 的復出...

這消息傳遍了整個科技界:「HMD Global will launch the Nokia 3, 5, and 6 at MWC, plus a 3310 homage」,不過一個最大的問題是只支援 2.5G:(出自「Nokia 3310 (2017)」) The phone only runs on 2.5G at the time of launch, which has subjected the phone to criticism, and means that … Continue reading

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在手機裡面裝木馬後故意讓別人偷走,然後觀察小偷的行為並且拍成紀錄片:「Student Lets Thief Steal His Phone, Spies On Him For Weeks To Make This Documentary」。 影片已經有人翻譯完,有中文字幕可以開起來看: 裡面用的木馬 (防盜軟體) 是 Cerberus。

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Google 對國際電話號碼格式常見誤解的說明

Google 對於國際電話號碼格式常見誤解的說明:「Falsehoods Programmers Believe About Phone Numbers」。 先看最後一個: 15. Phone numbers are always written in ASCII In Egypt, it is common for phone numbers to be written in native digits. 電話號碼不是 ASCII 可以搞定的喔!!!然後你就可以理解沒什麼是不可能的 XDDD 這個系統是靠各種 backward compatible workaround 堆出來的,你覺得的假設通通會被推範 XDDD

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