Get paid to walk around. Let’s look at three cool apps that pay you for walking around. The rewards can be in the form of cash, coupons, or discount. Sweatcoin:Sweatcoinlets you convert your footsteps into its currency, which you can be used to get discounts in some stores around you...
but they certainly aren't the primary way in which users would search for items in your store. You don't walk into a department store and say "show me everything you have in XL". Attributes can also be selected concurrently - so the customer may be searching for something ...