I frequent a small, independent coffee shop near my mansion in West Akron. Normally, charges there code as restaurant purchases and receive the extra-point UR bonus when using my Sapphire card. However, the shop recently switched its credit card processing to Square, specifically the Square Stand pictured below.



That change means charges now code as general purchases instead of restaurant purchases. Thus, no UR bonus, so you may not want to use your Sapphire card at restaurants using Square.

By the way, you'll see "SQ" (for Square) in front of the store name in the transaction detail.

RNE, telling you to beware the Square.