Hi! I would like to suggest for the new Cash Registers to have a feature that allows the owner of the register to give access to other players!
If you may ask why, I had a sudden idea of leasing my in-village house (house inside the village and not the housing districts) and my Asoki Port house, along with Cash Registers I own, to players so they can set up their own shop in strategically optimal locations with more exposure to other players in exchange for a small agreed-upon fee for renting the space. Although there would have to be immense trust between the lessor and the lessee, I believe this would be a fun little gimmick both RP-wise and gameplay-wise for Nin.
An alternative to allowing access to Cash Registers to ensure that the lessee's earnings are kept private to himself and the lessor cannot maliciously take from the lessee's earnings or registered items is to allow furniture placement for the "Guest" feature in a house's permission tab. This would allow the lessee to place their own Cash Register in the leased house while keeping the Cash Register private and inaccessible to the owner of said house, because we all know that in the current update, access to a cash register is only granted to the owner of the register.
Please do consider this player suggestion, I believe this would be a fun addition to the game!