I just came across this, new to me. The "ACS PlayOn" mobile device is a handheld miniature chip-buying ATM AT EACH TABLE. It saves the casino labor costs and inconvenience by automating and easing the job of the player replenishing his chips. He can get more chips right at the table: he quickly inserts his ordinary bank debit card into the table's handheld small ATM, and receives a voucher to get more chips right at the table. Thus, he never leaves his seat, never has to search for the cashier's cage or a distant ATM. All this increases the casino's revenue take.

Read all about it here:
¶ video showing how it works; video: https://www.acsplayon.com/products/playon-tables
¶ their home page: https://www.acsplayon.com/
¶ spreading to Nevada casinos: https://vitalvegas.com/atms-las-vegas-casino-table-games/

the table's small hand-held mobile ATM:

Robert