no further action this feature prevents the unintended disabling of other rfid tags that may be within the communication range of the pos computing device 110 on the other hand if there is a match then the combined concatenated value will be stored in the rfid tag 106 and software stored within the tag 106 will the initiate the programmable fuse technology e g efuse associated therewith to disable the rfid tag so as to render the data therein unreadable by any rfid reading device as shown in block 216 for example the rfid tag software may initiate a self reprogramming sequence in which one or more fuses within in the tag 106 are blown so as to cut off access to the data stored therein however the data itself is not erased or destroyed by this process finally decision block 218 reflects whether there are additional rfid items to be read and disabled if not the process ends at that point otherwise the method returns back to block 202 in fig2 a to read another item as indicated above the disabling of the rfid tag 106 during a purchase transaction prevents unauthorized reading of the tag data by a third party possessing rfid reading equipment however as also indicated above it may become desirable at the purchaser 39 s discretion to render the rfid tag 106 readable again thus fig3 a and.