Extended Membership Card Functionality (Recurring Subscription & Customer Image)

In order to utilize Boomerangeme as an membership and access card for Gyms (and other similar uses) some additional functionality is needed. Recurring Customer Subscriptions: * There needs to be a way to connect a customer who is paying for an active membership. * The card should be a "permanent" card in the system, so the customer data never expires. * The customer's subscription can either be active or inactive depending on the current subscription. * Example: Customers purchase gym membership package (automatic renewal or manual renewal) 1 month, 6 months, 12 months, etc...  * So if the the customer payment subscription has ended, the card is still available (because they will eventually renew)...  The scanning manager needs a way to see this customer's payment subscription has ended so they cannot access the gym. Customer Avatar Profile Image: * The scanning manager needs a way to verify the person with the card is the authorized person. * Typically a gym will take a photo of the customer on their first visit.  * Maybe there should be an additional customer field (image field) that managers/admins can add a customer image from camera. * Or give the manager/admin access to modify customer profile image, and additionally "lock" the image so the customer cannot change the image to a different person. * The scanning app also needs to show the customer profile image when scanning a membership card. Would be really great to use Boommerangeme as membership access card:  Gym daycare, doggie daycare, ski resort, zoo, playplace, museum, sports, ticketing, events, arcade, waterpark, carnival, etc...