Ditch your sim card

The SIM is an essential element of any mobile phone, letting you make calls, send texts and – on smartphones – access the internet. Over the years, the size of SIM cards has shrunk to mini, then micro

It’s a long process, but it’s worth it.

Trials designed to prove the concept of GPS pay-as-you-go ticketing are under way, using a GPS-capable smartphone and a train company-specific app. PETER PLISNER signed up and headed out on the railways

Passwords have become rather old hat. In fact, there are moves afoot to ditch them altogether in favour of all-digital passkeys, but for those to work you still need some way to prove your identity. A

It’s difficult but not impossible.

PHYSICAL STORAGE Store small USB sticks in craft boxes I’ve just started transferring MP3 files to small USB sticks to use in the appropriate socket in my Bluetooth speaker. But storage as usual with