How to use Wi-Fi calling on your phone (and the ideal time to switch from LTE)

You can still make and receive audio and video calls without a cellular connection. Here's how to do it on your Android or iPhone.

I used Claude Code to vibe-code an Apple Watch app in just 12 hours - instead of 2 months

But using Claude Code, I worked on the Watch app over the course of about 12 hours in actual time, spread out over about three weeks. I was excited to see an actual app in the first two hours and ...
IEEE

CQP-RFFI: Injecting a Communication-Quality Preserving RF Fingerprint for Wi-Fi Device Identification

Abstract: Recently, there has been an emerging radio frequency fingerprint identification (RFFI) technology that enhances fingerprint distinguishability by deliberately injecting I/Q imbalance into ...
EDN

How to implement MQTT on a microcontroller

MCUs are ideal MQTT clients because the protocol is lightweight and designed for low-bandwidth, low-RAM environments.