Perhaps it's my age and the fact that I remember a rather different United States.
But I found the solution in the mid nineties.
I don't do metal detectors!
Barring the extremely rare visit to a federal building, or Court House, or the equally rare absolute necessity of meeting or seeing someone off at an airport, I simply do not do metal detectors.
Period!
A metal detector installation or the "wanding" process simply tells my that those in control of the installation feel it is a potentially dangerous place.
Clearly too dangerous for me to enter of my own free will, let alone enter unarmed. The practice smacks of the "lets harass the sheep who haven't done anything wrong yet, so that they'll fear doing anything we disapprove of in the future.
I would surmise that in an era of declining economy, failing businesses and incredibly high levels of mortgage foreclosures, that the detectors have nothing to do with Bank robbery.
More likely they are being put in place to protect upper level executive from furious disgruntled customers who believe they've been defrauded and seek redress..
I would suggest that Jim357 (IF his current Bank adopts the practice) do a brief survey of the alternative Banks in his area, select one without such insulting behavior to it's customers, move his accounts, and let both the old and new bank know why the accounts are being moved.
FWIW, between on-line banking, telephone and drive up windows, I don't believe I've been inside my bank in over a year, though I can see where others might find more frequent visits necessary.
As always, JMHO
Regards,