system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How did banks keep track of legitimate withdrawals before the electronic age?

It seems that the old paper savings booklet banks used in the past would have made bank withdrawal fraud extremely easy. 

How did banks protect themselves against exploits back in the era before electronic banking? And how did your savings information get propagated between various branches of the same bank or even worse different banks?
Could you only ever draw money from your home branch? What would you do in case of an emergency while on holiday for example?

EDIT: added some more info to substantiate the question.
gpt
The savings booklet was just your personal record. The bank's record was the final say in the matter.

Keeping track of deposits and withdrawals before electronics was easier because there was a paper trail and things happened more slowly.

Electronic banking enabled a host of new scams and problems because transactions can happen very quickly and a person exploiting a weakness in the system can do so from a hidden location.

The *only* problem with the old way was the mountains of paper that had to be maintained and gone-through if there was an audit.