NFC business cards without a subscription — honest breakdown from someone who manufactures them (DIY vs buying)

The old "best NFC business cards without subscription" thread here got deleted by its OP, and the question keeps coming up, so here's a straight answer. Disclosure first: I run a small company that makes metal NFC cards (Discard, Bulgaria), so I have a horse in this race — which is exactly why I'll give you the DIY route first.

The thing nobody selling these tells you: the subscription is never for the hardware. The chip in almost every NFC business card is an NTAG 215 or 216 — the same tag you can buy blank for well under a euro. The monthly fee pays for the hosted profile page, analytics, and lead capture. Whether that's worth paying for is a real question; the chip isn't.

DIY, zero subscription, forever: buy blank NTAG cards or stickers, grab any free NFC-writing app, and write either a URL you control or a vCard straight to the tag. Two things to know: an NTAG 215 has 504 bytes of user memory, so a direct vCard fits name, phone, email and not much else — no photo, and long URLs in the vCard eat your budget fast (216 gives you 888 bytes). And updating is a non-issue people overthink: the business card stays in YOUR pocket — you tap other people's phones — so rewriting the tag takes thirty seconds whenever your details change.

If you buy instead, check three things: (1) is the profile editable forever on a one-time price, or does editing sit behind the monthly plan — read the pricing page bottom-up; (2) locked vs unlocked tag — this is a genuine tradeoff, not a spec-sheet checkbox. A tag locked at production can never be rewritten, which protects you (nobody with 5 seconds of physical access can re-point your card at a phishing page) but also means the card depends on the vendor's domain staying alive. An unlocked tag is re-pointable forever but hijackable. Reputable vendors lock (we do); whichever you buy, ask the vendor what their wind-down story is — data export, redirects — because "what if you fold" is the question none of the pricing pages answer; (3) if it's a metal card, ask how they handle the NFC, because solid metal blocks the signal — every legit metal card solves it with an antenna window, ferrite layer, or hybrid construction, and the ones that don't answer that question are metal-look plastic.

Happy to answer manufacturing questions (fiber-laser engraving on coated metal comes out lighter than the surface, which surprises everyone the first time). What are you all writing to your tags — direct vCard or URL?