Your oxygen (O2) sensors are small but mighty — they help your engine run efficiently, cut emissions, and prevent costly damage. With the right OBD-II scanner and a bit of know-how, you can decode ...

A triathlon smartwatch can revolutionise your training and racing. But with so many on the market today, which are worth the ...

Where (and how) you wear your health tracker can impact your data accuracy. Here's what researchers say matters most.

Dive into The Register's online archive of incisive tech news reporting, features, and analysis dating back to 1998 ...