Once a month, the McKinney PASS offers are updated based on what the local merchants would like to promote for their business.
These updates can be reviewed either from the PASS itself or from the corresponding website. As long as your PASS is valid, you can obtain the offer that is being presented by the merchant.
Some merchants may have Geo-fencing enabled which will broadcast special offers to your phone if you are in close proximity to their location.
Each mobile PASS is generated based on the firmware credentials of the mobile device and cannot be transferred to any other phone. Your PASS is just like an airline boarding pass, it is personalized just for one individual with encrypted security.