[ntp:questions] GPS Jammers in Use by Criminals - Warping Time for Fraud Suggested

[David Woolley]

An article in the Metro, the free morning paper on the London commuter 
transport network, suggests that criminals may be using GPS jamming 
equipment to warp the time on financial systems to allow the commission 
of fraud.

Although I can't find the source of that article, the BBC has an 
article, presumably from the same underlying source, addressing another 
point in that that article, that GPS jammers are increasingly being used 
to defeat GPS based car tracking systems.

http://www.bbc.co.uk/news/technology-17119768

The Metro mentions a risk to car ferries from the denial of navigation data.