RFID experts have dismissed as science fiction claims by German security expert Lukas Grunwald that hackers could reprogram RFID tags using a handheld device as they walked around a store.
Grunwald, a senior consultant at technology firm DN-Systems Enterprise Solutions, claims he has developed software that can rewrite, scramble or wipe out data on tags.
Used on a handheld device, this would cause chaos in store, both from a shrinkage and an inventory point of view, he claimed.
However, item level tags in grocery retail were almost exclusively passive, which meant they were written at source and were subsequently read-only, said EPC Global project manager at the e.centre David Lyon. “Active tags could be rewritten, but they are far more expensive, and wouldn’t be used in grocery retail, even on high value items.”