Everyone knows about keycards failing. Hotels, lock manufacturers, anyone that has ever stayed in a hotel has probably had the keycard fail at one time or another – the science shows that mobile phones, when held against the magnetic stripe of a keycard, can cause it to demagnetise. The science also shows that when a mag-stripe is scratched it can also demagnetise. So although some are surprised by the Hilton announcement, others will say, ‘why on earth has it taken so long if we've known all along that the keycards have been failing for so long?’
Lets say you were the Mayor of the council that had installed the light rail system and you were advised by the contractors that installed it that the problem wasn't that bad, and that the tram worked sometimes, and and you could still run the tram system, would you keep it? And lets say you were told by the contractors that you had no choice really, but to stick with it, as there was no replacement ready anyway.
So although mag-stripes systems, like a defective light rail system, was not working all the time, the hotels kept using it. Until now that is. Hilton have finally realized that there is a better system out there now to replace mag-stripe keycards and that is digital keys systems.