What are the limitations of RFID?
A common limitation of RFID technology is memory size, which varies substantially from product to product. Some tags are writable and others are not. Some tags can store only 96 bits of data, while others store 64 MB. Identifying the best technology for your application is critical in the solution design process, since memory size typically affects cost. RFID tag read range can also be an additional limitation. It varies as a function of tag type, what the tag is applied to and reader power output and receive sensitivity. Some passive interrogation systems, for example, are substantially more sensitive than conventional fixed reader technologies and have significantly different value propositions. End users often compare apples to oranges when evaluating the read range of RFID technologies. Active tags, (with an onboard battery), can transmit their ID up to 3000 feet away, while their passive counterparts (which harvest energy from an RF field) often cannot exceed a read range of 15 –
