Universal Remote Control
From Tardis Wiki, the free Doctor Who reference
The Universal Remote Control (or URC) was a gun-like object used in late 21st century Cardiff for a variety of different purposes. Freda carried one with her when she was accidentally brought to 2009. (BBCR: Asylum)
Settings and Abilities
The URC would allow people to purchase things by scanning the barcode and debiting it to their rations. Beside the main use, it had at least 5 other settings. (BBCR: Asylum)