Two different products with the same category name
Popl and QRBold both appear under "digital business cards" and solve genuinely different problems, which is worth naming directly rather than pretending they are close substitutes.
Popl is a sales-team tool. The centre of gravity is the event: capture a lead, get it into the CRM, measure the return on the booth. NFC hardware exists because tapping a phone is a better interaction than asking someone to open a camera when you are standing in a noisy hall. The buyer is usually a sales or marketing leader, and the metric is pipeline.
QRBold, in this cluster, is an IT tool. The centre of gravity is the employee lifecycle: provision on hire, keep accurate through the tenure, revoke on departure, with brand governance across every card. The buyer is usually IT or operations, and the metric is coverage and control.
Organisations frequently need both, and there is no shame in running one for the field sales team and the other as the company-wide programme.
On NFC versus QR
Popl's hardware is a real advantage in its context and it is worth being straight about the trade-off rather than dismissing it.
NFC is a better in-person interaction: a tap is faster than opening a camera, and it feels considered. The costs are that it is per-person hardware to buy, distribute, and replace; that it only works in person; and that reader behaviour still varies across devices.
QR works everywhere the card link does — in an email signature, on a badge, on a slide, on a booth banner, on a screen shared over video — and costs nothing per person. In practice the email signature placement generates far more scans across an organisation than any in-person interaction, simply because it operates continuously. If you want both, an NFC tag can point at a QRBold card link; the card does not care what routed someone to it.