Customers should be allowed to use the intercom at the grocery store.

This will greatly improve efficiency and the overall shopping experience.

For example: "Hey can I get a price check on this jar of pickles?" The workers will quickly respond to the deli section to confirm the price for the customer.

"Is there any more Baja Blast in stock? I only see regular Mountain Dew" A worker can check in the back and bring some over to the soda aisle.

This can also be an avenue for customers to provide constructive feedback "These egg prices are outrageous!!" Management will overhear and take note.

If I'm in a good mood I can even tell a joke to brighten the mood in the produce section "Why did the tomato blush? He saw the salad dressing!"