Hi , can the tags work inside teh cell phone case ? Im planning to order a few to test , but only issue is I want to attach to the back of the cell

These tags are roughly the size of an American quarter. You can test the fit by placing a coin between your cellular phone and the case. If the quarter fits, you should be fine. If the coin doesn't fit, it is unlikely the tag will fit. By the by, I purchased these tags for use in a ring. I soaked the tag in fingernail polish remover to soften the PVC material, bent the tags to shape, and discovered the tag would hold the new shape once the PVC re-hardened. Hope this helps!

Hi guys, does this card have t5577 chip or not?

yes,sure. it has T5577 Chip inside. Thanks.

What device is needed to write this tag? Will Keysys work?

No. Keysy will only work with Keysy tags/fobs.

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YARONGTECH rewritable RFID 125khz T5577 Coin tag Adhesive Back Dia 25mm Thickness 1mm (Pack of 5) (White)

YARONGTECH rewritable RFID 125khz T5577 Coin tag Adhesive Back Dia 25mm Thickness 1mm (Pack of 5) (White)

Product ID: 343153319

Details

Brand
YARONGTECH
Colour
White
Finish type
Uncoated
Material
Polyvinyl
Size
25mm

📡125kHz frequency for reliable RFID communication

🧩Slim 1mm thickness fits discreetly anywhere

♻️Fully rewritable T5577 chip for endless customization

$28.56

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

♻️ Reprogram your world with the sleekest RFID coin tags in town!

DURABLE RELIABLE - Crafted from robust white PVC, these tags withstand daily wear while maintaining pristine performance.
UNIVERSAL COMPATIBILITY - Works flawlessly with popular devices like Flipper Zero and standard 125kHz RFID readers—plug and play simplicity.
EFFORTLESS REWRITABILITY - Rewrite and reprogram your RFID tags on the fly with T5577 technology—flexibility that keeps you ahead.
COMPACT DISCREET DESIGN - At just 25mm diameter and 1mm thickness, these coin tags blend seamlessly into any environment without bulk.
READY TO STICK CONVENIENCE - Adhesive backing lets you deploy these tags instantly—no extra tools, no hassle, just stick and secure.

YARONGTECH’s pack of five 125kHz T5577 rewritable RFID coin tags offers a slim, durable, and fully customizable solution for secure access control and asset tracking. With a compact 25mm diameter and 1mm thickness, these adhesive-backed white PVC tags deliver seamless compatibility with devices like Flipper Zero, making them the go-to choice for professionals demanding flexibility and reliability.

Specifications

ASIN	B07BVPWK7X
Best Sellers Rank	23,940 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 57 in Medical RFID Supplies
Brand Name	YARONGTECH
Colour	White
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (377)
Finish Type	Uncoated
Ink Colour	White
Is Customizable?	Yes
Item Shape	Round
Line Size	1 Millimeters
Manufacturer	YARONG
Manufacturer Part Number	T5577COIN-5
Material Type	Polyvinyl Chloride
Model Number	6598596609
Number of Items	5
Number of Labels	5
Number of Packs	1
Product Warranty	1 year
Size	25mm
UPC	725350792657 725350792664
Unit Count	1.0 count

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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