In the west of Beijing there's a convenience store which isn't run by staff, but by artificially intelligent digital technology.

The 'Eatbox' shop is located in a busy shopping centre and is no bigger than a shipping crate.

First-time customers use their phone to scan a barcode by the entrance, then upload a selfie to the stores database. In less than a minute the customer's face is registered online, and they may enter by standing in front of the entrance.

A facial recognition system unlocks the door, allowing the customer to enter.

Chosen goods are then scanned and paid for by mobile phone. If a customer fails to pay the exit door will refuse to open.

Shopper Hu Guanxiong says it's more efficient than ordinary stores.

"The whole shopping experience is very quick. You choose your items, pay and go. There's no long wait, or worrying about cash."