Why CDMs?
Another reason for the inception of the idea of a kiosk that accepts ATM deposits was to optimize bank branch operations. You see, majority of the transactions that take place in a bank branch on the daily are deposits, be it cash or check. And manually processing these deposits introduces a few problems:

The number one concern with manual cash management is the risk of theft, both internal and external.
Another big problem with manually processing these deposits is that human tellers are prone to error, no matter how well trained they may be.
There are also safety concerns and risks associated with physically transporting the cash safely to the vaults.
These in-person deposits have an adverse effect on productivity as well. Long, manual processes are both time-consuming and cumbersome for employees, without positive impact to revenue.
These were the main reasons that determined the need for an automated system for accepting deposits. This is what bred the Cash Deposit Machine and later, a similar kiosk that also accepted checks.

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Enhanced Customer Experience

The initial deployments of CDMs were met with negative critique from naysayers, but soon people realized the undeniable benefits of the technology. With banks and financial institutes being able to move more transactions from branches to kiosks, customers would no longer have to enter branches for everyday tasks like making a deposit or withdrawing some cash. The ability to install freestanding kiosks in public locations unlocked scenarios which were previously impossible:

1. Bank customers could access basic financial services 24/7 through CDMs since they aren't limited by branch operational hours.
2. Kiosks rarely require customers to form queues since their customer service times are so short and they aren't limited to any specific operation hours within a day.
3. Physical branches became less crowded for transactions that required human tellers who also experienced job enrichment since they weren't processing deposits all day long.