Comment Re:Active Bluetooth transmission 0.7 sq mm? (Score 1) 17
The devices — made with microchips 0.7 square millimetres in size — are embedded in shipping labels stuck to the shrink-wrapped bundles of items trucked from warehouses to stores
That indicates that the chip is 0.7 mm, but it makes no claim whatsoever about the antenna and potentially other electronics (e.g. capacitors) that may be included in the full device. I'd assume that the antenna covers the back of the entire label.