After previously announcing the unsurv offline open source, privacy friendly, compact GNSS receiver with ESP32 and NFC, its creators Unsurv Technologies have now made it available to purchase from the ...

Update 3/9/25: After receiving concerns about the use of the term 'backdoor' to refer to these undocumented commands, we have updated our title and story. Our original story can be found here. The ...

If you are searching for an easy way to add biometric fingerprint sensor to your project you may be interested in a new wireless open source ESP32-based fingerprint module equipped with NFC created by ...

We just got our hands on some engineering pre-samples of the ESP32-C3 chip and modules, and there’s a lot to like about this chip. The question is what should you compare this to; is it more an ESP32 ...

NFCタグの大きな特徴は、タグ自体にバッテリー（電源）が不要な点です。 スマートフォンなどのNFCリーダー（読み取り機）が近づくと、リーダーから発せられる微弱な電波を電力に変換して起動し、記録された情報を送受信します。

A hot potato: The ESP32 chip, found in over a billion devices worldwide, contains undocumented vendor-specific commands that could potentially be misused to access device memory and manipulate ...

[Matheus Garbelini] just came out with three (3!) different WiFi attacks on the popular ESP32/8266 family of chips. He notified Espressif first (thanks!) and they’ve patched around most of the ...

The HiPo 3.52-inch e-Paper display comes across as one that is designed to operate without a battery, relying instead on NFC for the information and the power needed to update the display. As the ...

Smartphones may be pocket-sized computers that can do thousands of different things… but sometimes that’s as much a weakness as it is a strength. I can’t count the number of times I pulled my phone ...