Most "real" bank robbers do "pass notes" to the Tellers.....I do suggest you having ur deposit slip/drivers license/money ready....or the withdrawal slip along with ur drivers license/bank card "ready" to give to the Teller....then signing "I'm deaf"...and if a note is needed, have pen and paper ready if one is not at the counter....
At my bank, we also have a "information desk"...and that's where the Cop usually hangs out....right by the front door, so it gives him an opportunity to "eye ball" every customer that walks in immediately......customers go there if they need to discuss their accounts with a representative....
This thread really gave me something to think about!