Usually I use my deibt card for payments at the retail stores and for financial transactions which is contact less with the cashier. Recently I noticed that when I use cash to make a payment at the POS cashier's finger tips come in contact with my finger. I am not sure if intentional or unintentional. I can speak for myself that I have no intentions to touch my finger tips with these people. Specially in hostile (for me it is) environments it may be interpreted wrongly. I strongly suggest that for cash transactions to take money from customers or to return the change to the customers at the POS, retail stores and cashiers should use small trays to place the money on or use some other method for contact less cash transaction to avoid finger tip or long nails touching. (Example: Like Brampton Transit uses trays for any transaction or some restaurants use tiny trays to place cash and receipts on, to return to customers). Specially for smaller coins. i.e. a nickle is much smaller coin