Comment Re:Where to get long range RFIDs? (Score 1) 140
Long range RFID is pretty hard to come by for any kind of realistic price.
There are basically two types of RFID systems:
Active (a transponder with a battery and processing power) - as used in some toll booths for your car
Passive (a tag that is powered by the signal from the source)
Long range means that you have to have an active system, which makes it a lot more expensive to do.
You can coax a medium(ish) range ~1.2m (or less) using a HF passive system (13.56 MHz), and a large gate antenna (think the size of the ones at the supermarket you walk through)
I was planning on doing a project using long range RFID to track items, say in a room, but had to abandon it fairly early on - it just wasn't feasible.
However in the end the project will be tracking items in and out of a fridge. I will be using, if all goes well, a passive HF system - the M1 reader from Skyetek http://www.skyetek.com/
Unfortunately the dev-kit is $1500!
There are basically two types of RFID systems:
Active (a transponder with a battery and processing power) - as used in some toll booths for your car
Passive (a tag that is powered by the signal from the source)
Long range means that you have to have an active system, which makes it a lot more expensive to do.
You can coax a medium(ish) range ~1.2m (or less) using a HF passive system (13.56 MHz), and a large gate antenna (think the size of the ones at the supermarket you walk through)
I was planning on doing a project using long range RFID to track items, say in a room, but had to abandon it fairly early on - it just wasn't feasible.
However in the end the project will be tracking items in and out of a fridge. I will be using, if all goes well, a passive HF system - the M1 reader from Skyetek http://www.skyetek.com/
Unfortunately the dev-kit is $1500!
