Phone sticker
Anti-metal NFC for the phone back
Ferrite-backed NTAG so the chip still fires through a steel phone chassis. Stick it under a case, encode once to your HelloTap URL, and every pocket becomes a tap target.
Wholesale
$0.25
Retail
$4.99
Premium printed: $9.99
≈1,896% on $4.99 ((4.99−0.25)/0.25)
Approx factory / Alibaba midpoint for anti-metal NTAG213 stickers.