# Legal

- Service run by Enriching Ventures. Free early access. [Terms](/terms).
- The Human Handoff specification is open under CC BY 4.0: [/spec](/spec).
- The SDKs are MIT licensed.
- The Ergo Thumb interaction that implements it is patent pending (U.S. 64/012,779).
- Ambient Precision™ and Ergo Thumb™ are trademarks of Enriching Ventures.