/challenges-projects/project14/rfidnfc/b/blog/posts/dude-where-s-my-keypadTable of Contents Introduction Keyless electronic locks / access control devices Nordic Semiconductor nRF52 Series PAN1780 (nRF52840) Firmware Building the virtual keypad Android app Demonstration Introduction I recently published a blogen-USTelligent Community 12https://community.element14.com/challenges-projects/project14/rfidnfc/b/blog/posts/dude-where-s-my-keypadMon, 02 Jan 2023 19:41:39 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:20989153-1659-480a-9ba8-235d1cc40ee1DAB1<p>Nice solution.</p> <p>Are you using any encryption?</p><img src="https://community.element14.com/aggbug?PostID=24995&AppID=393&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/challenges-projects/project14/rfidnfc/b/blog/posts/dude-where-s-my-keypadSat, 31 Dec 2022 17:40:13 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:20989153-1659-480a-9ba8-235d1cc40ee1dougw1<p>Cool app. I hadn&#39;t been keeping up with App Inventor - nice to know it can do NFC.</p><img src="https://community.element14.com/aggbug?PostID=24995&AppID=393&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/challenges-projects/project14/rfidnfc/b/blog/posts/dude-where-s-my-keypadSat, 31 Dec 2022 16:15:52 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:20989153-1659-480a-9ba8-235d1cc40ee1baldengineer1<p>Great write-up and clever idea.&nbsp;</p> <p>Are all NFCs writable? Or are there certain types to look for?</p><img src="https://community.element14.com/aggbug?PostID=24995&AppID=393&AppType=Weblog&ContentType=0" width="1" height="1">