# CKB Cheque Lock ## Synopsis This RFC describes a lock script that can be used to transfer assets, such as SUDT ([Simple UDT](https://github.com/nervosnetwork/rfcs/blob/master/rfcs/0025-simple-udt/0025-simple-udt.md)) and mNFT ([Multi-purpose NFT](https://talk.nervos.org/t/rfc-multi-purpose-nft-draft-spec/5434)), from one user to another user that does not have an ACP ([Anyone-Can-Pay](https://github.com/nervosnetwork/rfcs/blob/master/rfcs/0026-anyone-can-pay/0026-anyone-can-pay.md)) cell available, and without the sender having to provide CKBytes to create the destination cell for the receiver.