Prox Tag Entry System

Hi,
I’ve not been for ages so I don’t know if the door system has been
solved. If not, check out this ebay link.
Is 250 users enough? Looks like there are 10 lags with it. I assume that it
will be easy to get additional
compatible ones.

http://www.ebay.co.uk/itm/Entry-Door-Lock-Access-Control-System-RFID-Proximity-10-/180716914073?pt=UK_AudioElectronicsVideo_Video_TelevisionSetTopBoxes&hash=item2a13914599

Martin.