“No key wallet” is a canister based wallet that controls EVM addresses on Internet Computer (with your Internet Identity).
Link: https://vqbpb-giaaa-aaaap-qaxda-cai.ic0.app/
Feel free to report any issues on GitHub - nikolas-con/ic-evm-sign-starter: A "No key wallet" example project for the Internet Computer..
PS: To use sign transactions on IC there’s a fee of ~$0.015 as of 19/12/2022 and you’d need to send ICP to the wallet. Creating EVM addresses is free.