Can these be used to make keychains with epoxy resin?

The NFC sensors on MOST phones/devices do work through the thickness of resin-like materials, like phone cases, just be careful not to make the resin too thick on either side. Otherwise, the epoxy or resin should not pose an issue to the internal chip/wiring.

How do you program these? What do you use to write to them and able to rewrite?

Download NFC Tools or Macrodroid app

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30pcs NFC Tags Black NFC Tag NTAG215 NFC Cards Blank NFC Chips Programmable NFC 215 Tag Rewritable NFC Card, 504 Bytes, Compatible with TagMo and NFC Enabled Phones and Devices

30pcs NFC Tags Black NFC Tag NTAG215 NFC Cards Blank NFC Chips Programmable NFC 215 Tag Rewritable NFC Card, 504 Bytes, Compatible with TagMo and NFC Enabled Phones and Devices

Product ID: 389814704

💧Waterproof & durable PVC

💾504 bytes NTAG215 memory

📏25mm coin-sized compactness

90225Fr

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Sold byAmazon CongoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📲 Tap into the future with sleek, smart NFC tags that keep you connected and ahead.

BUILT TO LAST - Waterproof PVC design resists cracking and warping for long-term reliability.
ROBUST MEMORY - 504 bytes NTAG215 chip supports up to 100,000 rewrites—future-proof your data.
INSTANT SHARING - Tap to share contacts, WiFi, links, or game data—unlock smart connectivity instantly.
COMPACT POWERHOUSE - Coin-sized 25mm tags fit anywhere, perfect for on-the-go pros.
UNIVERSAL COMPATIBILITY - Seamlessly works with Android, iOS, TagMo, and all NFC-enabled devices.

This set of 30 black NTAG215 NFC tags offers 25mm coin-sized, durable PVC cards with 504 bytes of rewritable memory. Waterproof and compatible with Android, iOS, and TagMo, these tags support up to 100,000 read/write cycles, ideal for secure data sharing, gaming, and smart automation. Perfect for professionals seeking compact, reliable NFC solutions.

Specifications

ASIN	B09L7MJTGL
Best Sellers Rank	#51,797 in Office Products ( See Top 100 in Office Products ) #386 in Blank Labeling Tags
Brand	K LAKEY
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (533)
Date First Available	November 8, 2021
Item Weight	0.704 ounces
Item model number	SP-COIN-B-S-30
Manufacturer	SANPOPO
Manufacturer Part Number	SP-COIN-B-S-30
Material Type	Polyvinyl Chloride
Product Dimensions	4.72 x 2.36 x 0.39 inches
Shape	Round
Size	30pcs Coin Cards

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90225Fr

Duties & taxes included

In stock

Sold byAmazon CongoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Congo.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Good experience, but the tracking updates could be better.

2 months ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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