SIM cards have been an integral yet often forgotten part of owning a smartphone for the past few decades. For most users, the SIM card defines the basic commercial relationship they have with their ...

An Arduino library for the Hi-Link HLK-LD2450 24Ghz FMCW radar sensor. This sensor is a Frequency Modulated Continuous Wave radar, which makes it good for presence detection and has some interesting ...

SINGAPORE: When Christinah Heng answered a call in October from a local number she did not recognise, alarm bells did not ring. The interior design boss, 53, will pick up local calls because of her ...

Abstract: Effective waste management is a significant challenge in urban/rural environments, driven by increasing population density and waste generation. This paper aims to enhance the management of ...

If you're looking to save money on your wireless bill, these lesser-known, lower-cost cell phone plans might be the ticket. I’m one of PCMag’s mobile writers. That means I check out phones, hotspots, ...