Hardware signer

Read it on the metal before you sign.

Felspar is a sample desk for a signer you can hold, an allowance list you can mark, and a security file with the score split apart. This page does not connect a wallet and does not move funds.

Review the sample allowances See the three pieces
  • 3Pieces on this page
  • 8Sample allowances
  • 4Lenses in the file
  • 11Languages
A hand holds a matte charcoal signer with a blank warm-gray screen and a brass button, in a room with a lamp and a dusk window.
Photograph. The screen is left blank.

The pieces

Three objects. One check.

The Note shows the words. The Pebble only confirms what the Note already shows. The Plate is the backup, and the words are not printed here.

A charcoal signer with a blank screen and a brass button, standing on pale stone.

Note

A matte card with one screen and one brass button. The amount and the destination are meant to be read on that screen.

Screen
Yes
Confirms
On its own screen
Backup
Not this piece
A smooth graphite pebble with one brass dot, on pale stone.

Pebble

A small metal key with no screen of its own. It asks the Note to show the check, then confirms.

Screen
No
Confirms
Asks the Note
Backup
Not this piece
A brushed steel plate with a grid of empty circular recesses, on pale stone.

Plate

A steel plate with empty recesses. On this page the recesses stay blank. The backup words are not collected here.

Screen
No
Confirms
No
Backup
Offline plate

Why the screen

The check is the sentence you can read.

01

The key stays on the device

The sample describes a key that does not leave the metal. This page never asks you to type it.

02

Read the destination

A signature is the amount, the destination, and the network, written where a person can see them.

03

Keep the backup offline

The plate is the recovery note. The words stay off this page, and off any form.

Allowance desk

Eight approvals, written as rows.

Each row names a sample token, a spender, an amount, and a network. Marking a row only changes this page. It does not reach a chain.

Prepared sample · 12 Oct 2026 · not a live revocation

Showing 8

Unlimited means the sample spender could move the sample token without a new amount. It is a label on a fictional row.

Security file

The headline is not the whole file.

Six prepared files. Four lenses, scored apart, so one strong lens cannot hide a weak one. These numbers are not a certificate.

Prepared sample · 12 Oct 2026 · not a live rating

Showing 6

An evening desk with the charcoal signer, a closed notebook, a brass pen, and a steel plate of empty recesses.
The screen stays blank until the check is written on it.

The check

Four lines, then a signature.

  1. 01

    Put the amount on the screen

    The number a person signs is the number on the metal, not the number in a browser tab.

  2. 02

    Put the destination beside it

    A shortened address is not enough unless the file says which characters were checked.

  3. 03

    Name the allowance

    If a spender can move tokens later, that spender is a row, not a hidden switch.

  4. 04

    Leave the backup off the desk

    The plate can sit in the room. The words do not get typed into this page.

The limit

What this page will and will not do

On the page

  • A signer, a pebble, and a plate, as photographs
  • Eight fictional allowance rows you can mark
  • Six files with four lenses scored apart
  • A form that only checks itself in the browser

Left out

  • A wallet connection
  • A field for a seed phrase or a private key
  • A live revocation or a broadcast
  • A seal that an asset or a protocol is safe

Weight sketch

Sketch where the check spends its time

Two sliders. Three shares that add to 100%. This is a planning sketch on stated assumptions, not a fee and not a promise.

Screen 35%

Time on the words the device shows

Allowance 25%

Time on the spender rows

Backup 40%

Time held for the offline plate

Screen 35%. Allowance 25%. Backup 40%.

Assumption: more attention on the screen moves weight to screen, and more attention on the rows moves weight to allowance. The remainder stays with backup. The total is 100%. It is not a quote.

Questions

Before you treat this page as a product

A link with lang wins. Then a choice saved on this device. Then the country of this network address, for this visit only. That lookup is not written into the address. If it fails, times out, or the country has no language here, the page stays in English. You can change it with the menu.

Walkthrough

Ask for a walkthrough of the sample

Use this to check the form. It does not create an order, and it does not store the note.

The Note standing on pale stone.