LPoS is the acronym that is used for Leased-Proof-Of-Stake.
Leased-Proof-Of-Stake is a novel approach to distributed consensus that has been popularized & employed by the Waves (WAVES) crypto project. Strikingly similar to Delegated-Proof-Of-Stake mechanisms, the Leased Proof-Of-Stake approach empowers network participants that do not run full nodes with the ability to lease their tokens to those who do run full nodes, in turn, generating income for the leasing party and increasing the full nodes “stakeweight” on the network. Higher stake weight is directly associated with increased odds of producing blocks & earning more rewards.