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No till integration: why Lecy leaves your POS alone

No connector, no API to plug in, no till software update. This architecture choice explains why Lecy is deployed by placing a tag, and why it works with every payment system.

The first question shopkeepers with till software ask: "does it need to be integrated with my system?". The answer is no, and that is not a limitation, it is a deliberate architecture choice.

What a POS integration costs

Loyalty solutions integrated into the till inherit all the constraints of the till: compatibility to check (and there are dozens of systems), installation by a technician, updates that break things, extra screens for the team, training, dependence on the POS publisher. For a network whose shops do not all have the same payment system, integration becomes a project in its own right: long, costly, fragile.

The Lecy architecture: next to the till, not inside it

Lecy lives on the counter, not in the till. The NFC tag is physically placed next to the terminal; the proof of presence goes through the customer's phone, not through the payment system. Consequence: compatible with 100 % of tills, since it does not touch them.
  • Deployment: place the tag. Live the day it is received, including in a network with mixed systems.
  • Maintenance: none. No updates on the shop's side, no possible breakdown on the till's side.
  • Team: no new screen, no handling. The till stays exactly what it was.
  • Changing POS: the shop can switch till software tomorrow, the loyalty programme does not move.

"But then, how is the point reliable without the till?"

It is the tap that counts, not the receipt. Each tap generates a unique, encrypted, short-lived link: the proof that the phone was physically at the counter at that moment. The shopkeeper also sets the minimum delay between two points, so that one visit equals one point. Reliability comes from cryptography and physical presence, not from a line on a till receipt, and that is precisely what makes deployment so simple.

The author

Badr El Moujtahid is the founder of Lecy and runs NFGO SAS, its publisher. Before Lecy, years at Cartier (Richemont group), in supply chain and digital transformation. Read more.

301 words · published on 6 January 2026

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See Lecy for real?

Deployment takes the time to place a tag. The demo takes ten minutes. No commitment, from €35 a month per point of sale.

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