Certain phone models come with a built-in QR code scanner in HiVision mode. For example, on Huawei devices, this mode is represented by an eye-shaped icon and can be found by swiping up from the lock ...

Turn your smartphone into a professional car diagnostic tool with a $15-30 OBD2 adapter and free apps that read engine codes in seconds.

While they may not be the all-in-one solution some had envisioned, QR codes are still very popular. It’s easy to understand why, too — just point your camera or scanner at a QR code, and you’re ...

Thanks to Android 10, houseguests will thank you for not having to ever tap out a long Wi-Fi password again. Clifford Colby Former Managing Editor Clifford led How To coverage. He spent a handful of ...

File this project under “Getting Stuff Done” rather than “Shiniest Things”. [filid] works with a local free-WiFi access group, and wanted to map out the signal strength (RSSI) and coverage of their ...

QR codes have been around for awhile now, and were predicted to be the “next big thing.” QR codes were essentially something that you could scan with your phone, which would then take you to a web ...

QR codes are slowly becoming a rarity; however, once in awhile, you still see a QR code appear, usually around a local business. The unfortunate part is that most phones don’t have a built-in QR code ...

The ESP32 is an incredibly versatile chip that comes in all kinds of forms and devices. From smart "Now Playing"-style displays to security systems, it can do a whole lot. For those with a supported ...