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How Long Do RFID Chips Last? | Techwalla.com

RFID stands for radio frequency identification, a technology that identifies, locates and tracks items using radio waves. When an item is tagged with a tiny silicon chip and an antenna -- collectively known as an RFID tag -- it can be scanned by a mobile or stationary reader to identify the item. RFID chips last varying lengths of time, depending on the design of the RFID tag and nature of the...

Advantages & Disadvantages of RFID | Techwalla.com

Radio frequency identification is an automatic ID system. Like a barcode or the magnetic strip on a credit card, an RFID tag provides a unique identification code that can be read by a scanning device. Unlike other ID systems, RFID uses radio waves to communicate with readers. When a reader picks up these waves, it converts them into digital data that identifies the object that contains the tag....

What is the Difference Between Proximity ID & RFID?

March 31, 2015

Radio frequency identification (RFID) and proximity identification (ID) are similar technologies. While RFID is used mainly in the shipping industry, proximity ID is primarily a security solution. Radio waves are the key component of both technologies.

RFID is used mainly in the shipping industry.

credit: anek_s/iStock/Getty Images

RFID

RFID is the term that is used for various technologies that make use of radio waves to identify objects or people. RFID works by storing a serial number in the device that identifies an item or person. This information...

What Are the Functions of RFID? | Techwalla.com

What Are the Functions of RFID?

March 31, 2015

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Functions of a radio frequency identification (RFID) tagging system include internal control of fixed assets, internal control of expensed assets and theft prevention. The RFID system involves a tag and a reader. When scanned, the antenna within the tag picks up the radio wave and sends a response back to the reader.

RFID systems...

How to Make Your Own RFID Shield | Techwalla.com

The use of radio frequency identification or RFID chips is on the rise in technological items intended for personal use. Public transit cards, ID badges for some buildings, even credit cards now contain these tiny devices, some not much bigger than a grain of rice. RFID chips may some day be inserted into passports to speed processing at border security locations. However, they do concern some users because they are constantly broadcasting, meaning someone with an RFID reader could copy and possibly steal some information. You can shield your RFID chips with a device you can build at home.

RFID...

How to Make an RFID Blocking Wallet | Techwalla.com

How to Make an RFID Blocking Wallet

March 31, 2015

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Radio frequency identification (RFID) tags are appearing more and more frequently on our belongings, embedded in passports and credit cards and taking the place of bar codes on consumer products. Some people have concerns about the privacy issues posed by the tags, but any conductive material can shield an RFID tag and prevent...

How to Make a Bug Detection Device | Techwalla.com

Bug detectors are electronic devices that have the capability to detect the radio frequencies being transmitted by listening devices. This makes it easy to know if someone is eavesdropping on your conversations. Although these devices usually cost $100 or more to buy, you can make your own using items from an electronics or hardware store.

Find an electronic bug with a radio frequency detection device.

Step

Use the wire stripper and take off the insulation from the copper wire.

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Wrap the copper wire around the end of the toothpick using one end of the copper wire. Count the turns and stop at the 20th turn. Glue the end of...

How to Make a Homemade RF Detector | Techwalla.com

An RF Detector is an electronic device that detects RF (Radio Frequency) signals sent from bugs or other listening devices in a room. Although you can purchase these from online spy and gadget stores, as of 2010, these devices typically cost $200 or more. You can inexpensively build your own device if you want to find out if someone is listening in on your conversations.

An RF detector can be used to find listening devices.

Step

Place all of your materials on a work table.

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Take off the ends off the 41-AWG enameled copper wire with the wire strippers. Two wires will be exposed after stripping.

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Make a coil of 19 turns of the 41-AWG...

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