What are the security risks in Barclaycard OnePulse?

[ken]

Roland Perry wrote:

  > They should bite the bullet and have something that works

The weekly travelcard I get out of a machine at our local 
station works fine! Unlimited zone 1 & 2 travel om train & tube 
and 1-6 on bus. And they haven't asked to see a photo card for 
about the last six years.

Takes me three minutes a week to buy. Usually at the station on 
the way home the night before the old one runs out. So there 
isn't even a queue. The only problems are if I'm coming back 
after being away from London for a few days & I forget I don't 
have a card and accidentally get on a train or bus without paying.

I don't even know where I could buy an Oyster card. They don't 
sell them at the station nor in the nearby shops.