first of all, i really apologize for asking this kind of generic question, but since i am a complete newbie in this area, i hope you wont mind.
I found a nice and cheap RFID powered locking system (http://www.alibaba.com/product-detail/Waterproof-Digital-rfid-Card-Electronic-locker_60561282753.html) that i plan to use on swimming lockers for users to store their things.
Since i dont understand this area, i was wondering is this secure? I saw somewhere that RFID cards/bracelets can be cloned and that doesnt sound good. So, if somebody rents a locker today and clones the card, he can keep opening them until he wants, right (because the card/bracelet stays the same?)
Again, i know this is very broad question but if anybody have any suggestions or comments, please let me know.
Thanks a bunch!