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Be a regular
everywhere.

Xenia is your personal guest card. It remembers how you like things, so the barber, the garage or the pharmacy already knows.

The problem

Every counter starts from zero.

You have told the barber how you like it, and the garage which car is yours. Next time, or with someone new behind the counter, you say it all again.

Without Xenia

“Sorry, how do you usually have it?”

With Xenia

Guest cardShared

May

Your usual
Skin fade, number 2 on the sides
Important to know
Sensitive scalp

“The usual, May? Number 2 on the sides.”

How it works

One visit, four moments.

No app for the shop to install, and no account to make with them.

  1. Tell it once

    Write down how you like things, in your own words. It stays yours.

  2. Share for one visit

    Scan the code at the counter. The shop sees your card while you are there.

  3. Pay and settle

    Pay in USDC from your own wallet. The tab settles once the payment is checked.

  4. Take it back

    When you leave, take your card back. The counter screen goes blank.

Your guest card

How you like things, in one place.

Guest cardShared
Goes by
May
Your usual
Skin fade, number 2 on the sides
Important to know
Sensitive scalp. No clippers on the neck.
How you pay
USDC on Sui, from your own wallet

Shared with Corner Barber until you leave

What the counter sees

  • Only the parts of your card you picked for this visit
  • Your usual, and anything important to know
  • Whether your payment has been checked

What stays with you

  • Everything you did not pick for this visit
  • Your wallet and its keys
  • The choice to take your card back at any time

Who it’s for

One card, many counters.

Anywhere you come back to. Each place sees only what matters to it, and only while you are there. Hover or tap a place to see what it would remember.

Privacy

Take it back.

Your card is lent, never handed over. When you leave, the light goes out.

  • You choose what to share, for each visit.
  • When you take it back, access is cut within about 30 seconds. We have not measured that yet.
  • What a shop already saw can’t be unseen, just like anything said across a counter.
  • Your memory is encrypted and stored on Walrus. It belongs to you, not to the shop.

Shared with Corner Barber for this visit.

A demo of the idea. Nothing is sent from this page.

Under the hood

Three pieces, plainly.

Want the evidence? See the receipts.

  1. WalrusMemory you own

    • Your card is kept as memories through the Walrus Memory relayer, encrypted, in an account that belongs to you.
    • Each visit gets a fresh key. Taking your card back removes that key.
    • Saving takes around 30 seconds, so the app never makes you wait for it.
  2. TatumChecks payments on Sui

    • Reads each payment from Sui mainnet through Tatum’s gateway.
    • Checks it went through and that enough USDC reached the shop.
    • Each payment can settle a tab only once.
  3. SuiUSDC settles

    • You pay in USDC from your own wallet, on Sui mainnet.
    • Sharing your card and taking it back are transactions your wallet signs.
    • The shop’s tab settles only after the payment is checked.

Walk in. Already known.

Make your card in a minute, then just walk in.