AI authorization engine · built in Estonia

Payments that check themselves.

Set your spending rules once, in plain words. Every everyday payment is checked against them and an explainable AI risk score before it goes through, whether you pay with your phone, a card, a tag, your glasses or an agent.

Scroll
The problem

Small payments pay big fees.

A card payment carries a fixed fee on top of a percentage. On a coffee, that fixed part is most of the cost.

  • A €3.50 coffee, paid by card
  • Fixed fee plus a percentage, often around 4% of the ticket
  • The same coffee through Seren Pay: 1%, nothing fixed
€3.50one flat white
Card
€0.00
Seren Pay
€0.00

Illustration: card cost shown as €0.10 fixed + 1.4%, a common small-merchant rate in Europe; real rates vary by provider. Seren Pay's target is 1% with no fixed fee.

One payment, step by step

Every payment is checked before it moves.

0.0 s

The business asks

The counter shows a QR or an NFC tag with the amount.

0.4 s

You choose how to pay

Phone, card, tag, glasses or your agent. Only you choose.

0.6 s

Your rules are checked

"Lunch on workdays up to €15" either covers it or asks you once.

0.8 s

Seren AI scores the risk

Five signals, one score, every weight visible.

1.1 s

Confirmed for both sides

The business sees a guaranteed payment, never your private data.

Seren Pay12:41
€12.50
Restaurant · Old Town, Tallinn
Payment request received
Scan or tap to continue
App
Seren Card
Glasses
Seren Agent
✓Card signature valid
✓Rule: lunch on workdays, up to €15
✓€12.50 is within the rule
0.00
✓Auto-approve below 0.30
✓
Paid €12.50
Restaurant received a guaranteed payment
One engine, five ways

Pay the way you want. The rules follow you.

The same rules and the same check apply to all of them, so changing how you pay never changes what you allowed.

SEREN
ENGINE
AppScan the counter's QR and confirm.
Seren CardTap it on the business's phone. It holds no money, only a key.
Phone stickerA small tag on the back of any phone, iPhone included.
GlassesLook at the QR, tap the frame. Only inside your rules.
Seren AgentNo tap at all. It pays when an auto-pay rule covers it.
Inside the engine

A score you can read.

Five signals, each with a visible weight, add up to one risk score. Below 0.30 the payment passes on its own; between 0.30 and 0.70 it passes and is reviewed; above 0.70 it waits for a check. Every decision is logged to train a better model.

× 0.35
× 0.25
× 0.15
× 0.10
× 0.15
Risk score0.00AUTO-APPROVE
00.300.701
For businesses

Get paid without a card terminal.

Cafés, restaurants, hotels and laundries take payments on the phone they already own. Each payment arrives verified, and the customer's personal data stays private.

0%target fee per payment, nothing fixed
€0hardware to buy: your Android phone is the terminal
0ways your customers can pay, one console
0%fees during the free pilot
Where we are

Clear about the stage.

Now

Working prototype

Wallet, rules, risk engine, Seren Agent and the business console run end to end in demo mode. No real money moves yet.

2027

Free pilot in Tallinn

A first group of local businesses and customers, with real payments in a controlled setting.

Next

Across Europe

The same engine for any everyday payment, built in Estonia for the European market.

Early access

Be first to pay, or get paid, with Seren.

Join the waitlist as a customer, or ask about the free pilot for your business.