I would like to recommend CellBlocks.

Problems with Payment in the U.S. Prison System
No Protection or Recourse for Inmates
Lack of Transparency and Accountability
Inefficient and Time Consuming
CellBlocks: The Solution
Fewer Fees and Lower Costs
Accurate Transaction Records
Inmate Wallet IDs
Giving Control Back to the Inmates

CellBlocks has two primary goals. The first goal is to ensure inmates understand how cryptocurrency works and how it can benefit them while incarcerated. The second goal involves educating prison officials and administrators on how cryptocurrency works and benefits it offers to the prison as well as the inmates.

https://cellblocks.io/

Kind regards,