Haddock typed


TC wrote:

Oysters might be affected when placed on shop counters that use RF
security
stickers (the counter 'busts' the chip in the sticker by pounding it
with a
very strong radio wave).


My girlfriend recently started setting off the RF security detector
things at the doors to shops. We have been very puzzled about it, and
now I suddenly wonder if it's her Oyster card. The problem started
about the same time she bought it.

Surely not?

Sounds possible but places like the Broadwalk Shopping Centre in Edgware
would have had a major problem by now if it was the case. There again, I
remember the mother of a child who was an inpatient in the hospital I
worked complaining bitterly how he'd set off all the shop alarms the day
she was allowed to take him for an outing...

--
Helen D. Vecht:
Edgware.