ok so can the department store RFID secutity tags pickup up radio signal at any frequency to generate current?
94937
Department stores will/are using Passive RFID tags:\nPassive RFID tags operate without a separate external power source and obtain operating power generated from the reader. Passive tags are consequently much lighter than active tags, less expensive, and offer a virtually unlimited operational lifetime. The trade off is that they have shorter read ranges than active tags and require a higher-powered reader. Read-only tags are typically passive and are programmed with a unique set of data (usually 32 to 128 bits) that cannot be modified. Read-only tags most often operate as a license plate into a database, in the same way as linear barcodes reference a database containing modifiable product-specific information.\n\nRFID systems are also distinguished by their frequency ranges. Low-frequency (30 KHz to 500 KHz) systems have short reading ranges and lower system costs. They are most commonly used in security access, asset tracking, and animal identification applications. High-frequency (850 MHz to 950 MHz and 2.4 GHz to 2.5 GHz) systems, offering long read ranges (greater than 90 feet) and high reading speeds, are used for such applications as railroad car tracking and automated toll collection. However, the higher performance of high-frequency RFID systems incurs higher system costs
800644
You mean like a radio station? You can't really, Radio Station's  run their signals  on different frequencies then a wireless router.\n\nYou don't have the hardware to broadcast that high of a frequency not to mention modulate it. Like FM or AM..\n\nYou can do Internet raido..
312854
I would look into the system used by EZpass on highways and certain medications.RFID tags. They are usually from two to four square inches in size, and contain a silicon chip that holds a unique string of numbers identifying the item to which it is attached. A separate RFID "reader" receives the information contained in the tag through the tag's antenna. Unlike a bar code, the signal does not have to be read directly by a scanner; RFID signals need only to be in the vicinity of an RFID reader.
911971
The majority of passive tags use EEPROM memory. Some are laser programmed at the silicon level. Many active tags utilize battery-backed SRAM.
650858
sometimes they are used for radio antennas
355050
It works very well if the company installing it comes back to check the stations as promised. Without the monthly or quarterly check-ups they are completely worthless. Make sure they give you a report of any new activity, etc. on each visit so you know if they have come or not. Also, watch the technician if you are home, some guys get lazy and only check a couple of them and report "no new activity." They are suppossed to check every station on every visit!! Good luck!
689576
YES YOU CAN.\n\nBut like Gadget, I haven't figured it out yet.
1087340
i dont believe you can, and why would you want to...continuous pulse is more secure, otherwise it may not detect all foreign coins.
410372
call your local stations and see if they know\nthank you
1069300
Sure.  An oscilloscope ought to do the trick.
382117
http://www.securefreedomteam.com/rfifield  it is a home based business that I am doing well with. Good luck to you.
126117
Agree with #1, and will expand.\n\nMost consumer available wireless G receivers can receive wireless B signals, but not necessarily. You need to make sure the wireless router is capable of that. Indication is usually well marked on the equipment.
900301
You're probably going to be limited to line of sight inside the mobile.. You could add repeaters, but it's probably not worth the cost.
143587
Here is something that may or may not help\n\nIf you take a largish non polarized capacitor\n≥45µF\nand you apply AC 120V 60Hz to one side of it\nwith no ground reference! \nyou can then place \na small wattage low voltage lamp across the \ncapacitor terminals and it will light.\n\nThis is a way to send power over a single conductor.\nI have done this.\nI think it would also work with a coil instead of a cap.\n\nAs far as I can tell\nTesla wanted to use this principle to \npower the Earth\nusing the earth as the single conductor.\n\ndo you mean generate electric power at the other site?\ndo you mean energize an electric generator?\nmaybe for a very focussed wave and relatively small distance or a tiny amount of power.\nBut that is sort of why we use wires so much!\n\ndon't RFID cards transduce a wave and send it back\nI mean technically that is an example right?
196689
These are tag (which sometime take the form of badges, or paper stickers, or key chain fobs) that can be identified from a distance. Sometimes the distance is a few inches and sometimes it is a few feet. \n\nThere are a few technologies in use depending on the application. Some are passive -- a radio transmitter watches to see energy is absorbed by the tag. Some actually pick up power and radiate a digital code. The articles below should help.
219682
to RadioShack or Best Buy.
1072034
not every question/answer on this sight is stupid. \n   we can sometimes be informed.   \ni do think the 'chip' will be associated with, if not actually be the mark of the beast. every thing that you purchase has a barcode on it. that is RFID (radio frequency ID). a lot of companies are installing RFID scanners for all merchandise that enters the store. i worked for one of nestle waters bottling plant and wal mart has started trying to have them put RFID barcodes on products. so far it's too expensive, but the plan is in the works. owners are putting chips into their pets in case they get lost they can be returned. there are bars that offer a kind of chip to it's patrons so they can be admitted. some people are having themselves implanted. i can't understand the reasoning there... as it is now, you don't - yet - have to have an implanted chip. who do you know doesn't have a cell phone? a computer in their car (for diagnostic purposes, only, of course...)? and so on. it's all GPS (global position satelite). got cash in your pocket? wallet?purse? that thin metal strip in there (i like taking them out...just one of my little contributions to civil disobedience)? that strip can be tracked. labels on some clothes now have tracking in them. hanes? how about that nifty discount card the grocery store, or where ever, gave you so you could save when you use it? tracking the purchases of a geo-area? yeah, that, too.  oh! lets not neglect to mention that metallic strip on the back of your driver's license! at least here in Texas. it contains all the info on you that is in the main computer: financial, credit, military, legal, etc. it's in there. can anybody say: HAL? or even know what HAL is? it won't be too much longer, time being relative, that money will not be obsolete. there will be your 'account' (think direct deposit) and if you don't have the proper card (or implant?) you cannot buy, get medical care, anything. \nhey, i don't make this stuff up. it's real. you can look it up. one place you might try is infowars.com.