RFID Basics | How to Read & Write RFID Tags

RFID Basics | How to Read & Write RFID Tags

Hey guys, my name is Timothy Pribyl. I’m a Sales Account Manager here at atlasRFIDstore. Today, I wanted to explain a
little bit about what RFID is and walk through the process of writing an RFID
tag. Radio Frequency Identification is a technology that allows almost any object
to be wirelessly identified using data transmitted through radio waves. This
technology allows you to identify and track individual items as well as
multiple items simultaneously without a direct line-of-sight. Here are a few quick facts about RFID: RFID does not require a direct
line-of-sight; RFID tags are able to be rewritten and reused; RFID tags can be
extremely durable against impact and environmental factors; RFID readers can
read hundreds of tags within a couple seconds; RFID tag data is encrypted and
can be locked for extra security; RFID tags can hold more data than other types
of tags or labels; RFID tags can have information printed on them, like
instructions, barcodes, or company names; RFID systems can be integrated with
other internal systems or processes. Most RFID systems are made up of the same
basic components: a reader, an antenna, RFID tags, cabling, and sometimes
additional items or accessories. If it is a mobile handheld, like we will be using
today, only a handheld reader and an RFID tag will be needed. Now that I have
explained what RFID is, let’s talk about reading and writing RFID tags. Today, I
will be using the Grokker UHF RFID reader and a SMARTRAC RFID tag. I have set up
my reader by downloading the app from the App Store and logging in. Now, let’s
see if we can read our tag. On the main screen, select Basic RFID. Once the tag
has been read, select the EPC number that appears on
your screen. Then, select change EPC. A screen will pop up with the existing EPC,
and you can use your smart phone’s keypad to change the EPC number to whatever you prefer in the character limit. You’ll notice that the EPC was successfully
written. Next, we will read our tag with the new EPC. Software programs can be
created or purchased to help with your application. One example is with this
reader and its app, which is available for download on the App Store. With this
app, you can associate an RFID tag with a name or picture to help you locate that
specific tag. Here’s an example of how to do that. Select Add Tag at the bottom of
the screen, then select Start With Blank Item. You can add an image by selecting
Add Image and add a name by selecting Name. Once it has been read, the tag’s associated information is stored in a
database on the app. Now, if we step away from the tag and want to locate it again,
select Locate Tag and select the tag that we just programmed. Using this app,
image, and name-association with an individual tag allows you to locate the
exact tag you are looking for without searching through multiple EPCs. Thanks
for taking the time to watch our video explaining about RFID and the process of
writing RFID tags. For more information on all things RFID, check out our blog or
our RFID resources page, and as always, if you have any questions at all, send us an
email or give us a call.


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    if i were to change rfid, will the old reader would not read it unless i program it to read with new rfid number or the original reader will still read the original number?

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    Byron Lobsinger

    very good!! How much information can be stored; are there other passive tags that can store more information ?

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    I am looking at developing a system for my work where I can place a RFID chip (Preferably in say a 3D printed plastic chit or "tag") and need it to store some fields such as: Operator Name, Date, Time, Asset ID, and a couple more misc fields.

    I need to be able to write multiple times to these chips maybe once a month as the Operator performs maintenance. I would also need the operator to read the RFID unit to see when the unit was last serviced for instance.

    I'm very new to RFID's and would love a pointer as to what type of very entry level writer/reader would accomplish this. I'm self funding this as a side project for my work.

    thank you!

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