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

Product ID: 389814704

💧Waterproof & durable PVC

💾504 bytes NTAG215 memory

📏25mm coin-sized compactness

¥2660

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📲 Tap into the future: NFC tech that keeps you connected and ahead of the curve!

ROBUST RELIABLE - Crafted from durable, waterproof PVC to withstand daily hustle and spills.
POCKET SIZED POWER - Ultra-compact 25mm diameter fits anywhere, perfect for on-the-go pros.
ENDLESS CUSTOMIZATION - Programmable NTAG215 chip supports up to 100,000 read/write cycles for dynamic use.
INSTANT SHARING MAGIC - Tap to share contacts, WiFi, links, or game data—boost your networking game instantly.
NEXT LEVEL COMPATIBILITY - Seamlessly works with Android, iOS, TagMo, and all NFC-enabled devices.

This pack of 30 black NTAG215 NFC tags features 25mm coin-sized, durable PVC cards with 504 bytes of rewritable memory. Waterproof and compatible with Android, iOS, and TagMo, these programmable NFC chips support up to 100,000 read/write cycles, perfect for sharing data, customizing game saves, or streamlining smart interactions.

Specifications

ASIN	B09L7MJTGL
Best Sellers Rank	#54,326 in Office Products ( See Top 100 in Office Products ) #384 in Blank Labeling Tags
Brand	K LAKEY
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (529)
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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¥2660

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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