Do not accept business checks from individuals unless you know the check writer and who it was written too as well. NACHA rules forbid electronic re-presentment of business checks. 

A video camera properly placed will deter the person who is attempting to commit theft or forgery.

Picture IDs with every check is a must.

Utilize a check verification system.

Always obtain a matching physical home address, home phone and alternate phone number.   They should have something on them whether it is drivers license or a phone bill that matches their address.

Refuse to accept third party checks. You don't have proof that the person cashing the check has permission to do so.

Accepting Checks with Low Check Numbers, under "300", is a no-no.  If you know the person then use your discretion.

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