Second life

The spool is finished. The chip isn't.

A TigerTag chip is never locked in write. When a spool runs out, its chip goes on another spool, or becomes something else: a link, a contact card, a home automation trigger. Here is what a TigerTag+ Certified chip can become, and what changes on the way.

What a TigerTag+ Certified chip can become

The factory signature proves where a spool comes from. It covers what the brand wrote: rewrite the chip and the signature no longer matches. The chip is still useful, just no longer certified.

Where it goes	What it carries	Proves its origin	With
On its own spool, until it is empty	TigerTag+ Certified	Yes: the factory signature	Nothing to do
On another spool from the catalogue: a refill, another brand	TigerTag+	No: the signature no longer matches	Tiger NFC Connect, or Tiger Studio Manager with a reader
On a spool outside the catalogue: your own filament, an unknown brand	TigerTag	No	Tiger NFC Connect, or Tiger Studio Manager with a reader
On a spool for an Elegoo printer	The format Elegoo printers read	No	The chip editor in the apps
Anywhere else: a link, a contact card, a home automation trigger, a keychain	Standard NDEF	No	The chip editor in the apps

Four steps, no new chip

1
The spool is empty
Keep the chip: on the spool, the carrier or the refill strip.
2
Scan it
With Tiger NFC Connect on your phone, or Tiger Studio Manager and a reader.
3
Choose what it becomes
A spool from the catalogue, your own filament, or any NDEF use.
4
Write it
The app checks the chip and writes it. The new spool joins your inventory.

Nothing becomes e-waste

The branded chips are NTAG215 for exactly this reason: more memory, more uses once the spool is empty. A chip you rewrite is a chip you don't buy.

Quick answers

Can I reuse the chip of an empty spool?

Yes. A TigerTag chip is never locked in write: rewrite it for another spool with Tiger NFC Connect or Tiger Studio Manager, or turn it into any standard NFC tag.

Does a rewritten TigerTag+ Certified stay certified?

No. The signature covers what the brand wrote at the factory. Once rewritten, the chip becomes a TigerTag+ or a TigerTag: identified and readable everywhere, but no longer a proof of origin.

What does a second life cost?

Nothing. You reuse the chip you already have, and the apps are free.

Can a chip do something other than describe a spool?

Yes. Written as standard NDEF, it opens a link, shares a contact card or triggers a home automation scene, like any NFC tag. It can also be written in the format Elegoo printers read.

And a spool that never had a chip?

Track it as TigerData, or TigerData+ if it is in the catalogue, and give it a chip later: a new one, or one from an empty spool.