Use cases
Wherever someone stands
in front of someone else.
TapProof does three things: it accepts a card on an ordinary phone, it proves the device and the person holding it are who they claim to be, and it produces a signed record of what happened. Every business below is a different answer to the same question — who took this money, and where were they standing?
Capability 01
Acceptance anywhere
Any NFC Android phone becomes a terminal. Nothing to procure, ship, charge, repair or take back when someone leaves.
Capability 02
A trusted operator
The device is attested and the person is verified before a payment can be started. A rooted handset or an unverified operator simply cannot open a session.
Capability 03
Proof it happened
Time, place, operator, instrument and outcome, signed and sequenced into your system. Disputes get an answer instead of an investigation.
Where it fits
Nine situations, one technology
Sorted by how directly it removes a cost you already feel — not by market size.
01 · Delivery & logistics
Cash on delivery, without the cash
- The problem
- Riders carry float, reconcile at the end of the day, and a percentage never arrives. Cash also caps order value — nobody sends a rider out against a high-value COD parcel.
- What TapProof changes
- A tap at the doorstep clears the order before the parcel leaves the rider's hand, on a phone the rider already carries.
- The proof
- Handover is stamped with time, location and who took the payment, which settles the disputes that otherwise become refunds.
02 · Home & field services
Paid on completion, at the door
- The problem
- Technicians finish a job and then chase payment through a link, an app or the office. Every hour of delay is a collection risk and a support ticket.
- What TapProof changes
- Payment is taken while the technician is still standing there, on any card, with no terminal to issue or lose.
- The proof
- The job, the photograph of the work and the payment become one record, so a chargeback has an answer attached to it.
03 · Small retail & kirana
Card acceptance without a rental
- The problem
- A terminal means a deposit, a monthly rental and a service call when it fails. For a counter doing modest card volume the maths never works, so the shop stays cash and UPI only.
- What TapProof changes
- The phone behind the counter becomes the card machine. Nothing to buy, nothing to rent, nothing to return.
- The proof
- Every sale is attributed to a verified operator, which matters the moment more than one person works the counter.
04 · Markets & roaming trade
A terminal that costs nothing to deploy
- The problem
- Market traders, pop-ups, event vendors and mobile kitchens cannot justify hardware, so they turn away every customer without cash.
- What TapProof changes
- Deployment is an app install. A stall can start taking cards the morning it decides to.
- The proof
- Acceptance is tied to a verified operator, so an aggregator can extend acceptance without extending hardware.
05 · Insurance
Renewal collected before the policy lapses
- The problem
- Lapse is a field problem, not a product problem. The customer intends to pay and the moment passes.
- What TapProof changes
- The agent closes the renewal inside the conversation instead of leaving a link behind.
- The proof
- Who visited, when, what was explained and what was collected — the audit trail a conduct regulator asks for.
06 · Lending & collections
Card acceptance where UPI cannot reach
- The problem
- A customer with no bank balance but live credit headroom is uncollectable digitally today. UPI carries RuPay credit only.
- What TapProof changes
- A card tap reaches the credit line that UPI cannot, on the agent's own phone.
- The proof
- From 1 January 2027, RBI conduct rules require certified agents, prior notice and a strict contact window. TapProof enforces all three and records every refusal.
07 · Utilities & telecom
Meter reader and bill collector, one visit
- The problem
- Field staff already walk the route. Collection happens separately, later, and usually in cash.
- What TapProof changes
- The reading and the payment become the same visit, on the same device.
- The proof
- Presence at the premises is evidenced, which matters when a reading is disputed.
08 · Healthcare at home
Sample collected, payment settled
- The problem
- Home diagnostics and home care run on prepaid links or cash, and both leak.
- What TapProof changes
- The attendant takes payment at the door on the same phone that logs the visit.
- The proof
- Visit, identity and payment are bound together, which is what a home-care audit actually needs.
09 · Microfinance & rural
Group collection without a cash box
- The problem
- Centre meetings run on cash, counted in the open and carried back by one person. It is the largest operational risk in the model.
- What TapProof changes
- Any NFC phone in the field becomes acceptance. No terminal to buy, charge or replace.
- The proof
- Every collection is attributed to a named, verified operator at a known location and time.
The set
What this actually looks like
Different trades, same gesture. A phone held out, a card brought to meet it, and a record written the moment they touch.
The pattern
If it happens away from a counter, it fits
The common thread is not an industry. It is that the transaction happens somewhere a terminal was never going to be — a doorstep, a kitchen, a field, a market stall, a stairwell.
Fixed retail already has acceptance and does not need us. The interesting problem is everywhere a person, a phone and a card meet without a counter between them — and where afterwards somebody needs to know it really happened.
