---
name: "ykinfo"
section: "1"
platform: "linux"
package: "yubikey-personalization"
version: "1.20.0-5"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/ykinfo"
---

# ykinfo(1)

Get basic information from a YubiKey

## NAME

ykinfo - Get basic information from a YubiKey

## SYNOPSIS

**ykinfo** \[*-s*\] \[*-m*\] \[*-nkey*\] \[*-H*\] \[*-v*\] \[*-t*\] \[*-p*\] \[*-1*\] \[*-2*\] \[*-q*\] \[*-a*\] \[*-c*\] \[*-V*\] \[*-h*\]

## DESCRIPTION

Get basic information from a YubiKey. Can get serial number, version and current touch level. Can get all parameters at once or one at a time. If *-q* is given only the relevant string from the YubiKey is written to screen.

## OPTIONS

- **-s**

  get the serial number and output it.

- **-m**

  get the serial number and output it as modhex.

- **-nkey**

  read from the nth key found.

- **-H**

  get the serial number and output it as hex.

- **-v**

  get the version and output it.

- **-t**

  get the touch level and output it.

- **-p**

  get the programming sequence and output it.

- **-1**

  get the status of slot 1, 1 for programmed and 0 for empty.

- **-2**

  get the status of slot 2, 1 for programmed and 0 for empty.

- **-a**

  get all the information above.

- **-c**

  get YubiKey capability information.

- **-q**

  modifier, only show the relevant data from the YubiKey, no extra information.

- **-V**

  print tool version and exit

## EXAMPLE

Output information from a YubiKey:

```
$ ykinfo -s -m -H -v -t -p
serial: 1077254
serial_hex: 107006
serial_modhex: bcicch
version: 2.2.3
touch_level: 1793
programming_sequence: 1
$
```

## BUGS

Report ykinfo bugs in the issue tracker https://github.com/Yubico/yubikey-personalization/issues

## SEE ALSO

The ykpersonalize home page https://developers.yubico.com/yubikey-personalization/

YubiKeys can be obtained from Yubico http://www.yubico.com/