Muhammet Şafak — Security & verifiability recordsMaking events the server cannot observe directly — physical proximity, client-computed results — provable.https://www.muhammetsafak.com.tr/en-USSat, 18 Jul 2026 00:00:00 GMTinfo@muhammetsafak.com.tr (Muhammet Şafak)Swipenor: if the client computes the score, what does the server trust?https://www.muhammetsafak.com.tr/en/labs/swipenor/https://www.muhammetsafak.com.tr/en/labs/swipenor/The swipe-based true/false quiz runs end to end in its core loop as a mobile app; the score is produced on the client but verified server-side with a server_nonce and an HMAC signature. swipenor.com is the app's landing page, not the game itself.Sat, 18 Jul 2026 00:00:00 GMTactivebetamobilemobilegameapiScreen lock by Bluetooth proximity: present/absent is not enoughhttps://www.muhammetsafak.com.tr/en/labs/signallock-lab/https://www.muhammetsafak.com.tr/en/labs/signallock-lab/Locks the macOS screen when the device you carry moves away; the call rests on a proximity assessment rather than a raw present/absent signal, so fluctuation no longer produces false locks. The menu-bar app is published and ready to install.Sun, 01 Mar 2026 00:00:00 GMTgraduatedossbluetoothmacossecurity