UK supermarket Tesco has decided to bring its virtual supermarket screens (successfully trialled in South Korea last year) to Gatwick Airport. There's ten touchscreens in total, dotted around the departure lounge, with eager shoppers able to make a preemptive grocery strike with their smartphone. On-screen barcodes for around 80 items can be scanned by compatible -- that is, Android and iOS -- devices and added to your shopping basket. Following online payment, your bounty of food can then be assigned a delivery date
