​
License Properties

When creating a license in Lukittu, you can configure the following properties:

​
License Key Format

License keys follow the format XXXXX-XXXXX-XXXXX-XXXXX-XXXXX, where X can be any character from A-Z or 0-9. Keys are unique within each team. You can either:
  • Generate the key automatically through Lukittu
  • Manually specify a custom key

​
Expiration Types

​
1. Never

Suitable for lifetime access products. The license will never expire once issued.

​
2. Date

Set a specific expiration date for the license. The expiration date is timezone-aware and will be set according to your dashboard’s timezone.
Example: Setting an expiration date of 12/12/2022 will make the license invalid after that date.

​
3. Duration

Specify a time period after which the license expires. You can choose when the expiration countdown begins:
  • Creation: Timer starts when the license is created
  • Activation: Timer starts upon first license activation, generating an expiration date based on the activation date

​
Access Limitations

​
IP Limitations

Restrict the number of unique IP addresses that can use the license. Configure the IP limit period in team settings:
  • Day: Maximum unique IPs per day
  • Week: Maximum unique IPs per week
  • Month: Maximum unique IPs per month

​
Concurrent Users

Control how many users can simultaneously use the license. This feature:
  • Tracks usage through heartbeat signals
  • Uses the “Device timeout” setting from team settings to determine when a device becomes inactive
  • Marks devices as inactive if no heartbeat is received within the timeout period
Important: Dockerized environments may have issues with concurrent user limits due to difficulties in generating unique device identifiers.

​
Assignment Options

​
Product Assignment

Restrict license usage to specific products in your portfolio. This is useful when:
  • Managing multiple products
  • Creating product-specific licenses
  • Implementing tiered access

​
Customer Assignment

Control which customers can use the license:
  • Assign multiple customers to a single license
  • Enable shared license functionality
  • Requires customer ID in authentication requests

​
License Status

Licenses can have one of five statuses: ACTIVE, INACTIVE, EXPIRING, EXPIRED, or SUSPENDED. The status is automatically determined based on several factors:

​
Last Active Date

  • Tracks when the license was last used
  • Initially set to license creation date
  • Updates with each license authentication request
  • Used to determine inactivity status

​
Status Types

1. ACTIVE
  • Default status for valid, recently used licenses
  • License is within expiration period
  • Has been used within last 30 days
2. INACTIVE
  • No license activity for over 30 days
  • License is still valid but unused
  • Applies to all license types
3. EXPIRING
  • License will expire within 30 days
  • Only applies to DATE and DURATION type licenses
  • License is still valid and usable
4. EXPIRED
  • Past the expiration date
  • Only applies to DATE and DURATION type licenses
  • License is no longer valid
5. SUSPENDED
  • Manually suspended by administrator
  • Overrides all other status checks
  • License is temporarily invalid
A license is considered inactive if there have been no authentication requests for over 30 days, regardless of its expiration status.

​
Suspension

  • Temporarily disable licenses using the suspension feature
  • Suspended licenses are considered invalid
  • Useful for temporary access restriction

​
Metadata

Store additional license information using metadata:
  • Custom fields for extra license details
  • Used by integrations
  • Flexible data storage for specific use cases