I'm so confused. How is it any inconvenience to you? And something tells me you've never worked in retail. I'm sure if you were the manager and lost hundreds if not thousands of dollars by people walking out the door with stolen goods then you'd install a receipt check system too. And most people don't mind either so it's not like you will effect their business. Infact they'd probably lose more money hiring enough loss prevention staff and installing cameras to watch every person herpa-derping around the store in order to make up for a lack of receipt checks. Think about it logically dude.
Btw you're every retail employees nightmare lol
Your reasoning is flawed:
They are checking your bag and comparing your receipt to whats in the bag. Shop Lifters do not typically put their stolen items in a bag just given to them by a cashier. It is usually hidden on their body. The "Security" dudes are not searching the person, they are searching the bag of paid stuff.
Make no mistake, this process is to prevent their STAFF from checking out their friends or accomplices and "pretending" to checkout stuff and put it in the bag unpaid. It is an employee check, not a shoplifter check. Get better employees instead of treating your customer like crap.
Even if it was to prevent shoplifting... Compare it to this. You go to a Bank and withdraw money from your account. At the door a security guard asks you for your receipt and cash so he can make sure the cash you have matches the receipt to prevent a robbery. That doesn't make any sense does it?
Once you have PAID for your items, they are no longer the property of Best Buy, they have lost their right to protect property.
How about this... you order something from AMAZON and have it shipped to your house. When it gets there the FedEX guy asks you to open the box in front of him and present a copy of your invoice so he can make sure you didn't steal something between the shipping point and your door.
Maybe you have heard of this thing called the FOURTH AMENDMENT which makes it illegal to search a person, house, papers or effects without their permission or a warrant?
Not to mention, Best Buys prices suck. Why pay MORE to be treated like crap.