Use of item level transactional details in payment processing and customer engagement platforms

A payment collection processing and customer engagement platform gateway, comprising:

• a non-transitory storage medium storing instructions;
• and
• a processing unit coupled to the non-transitory storage medium that executes the instructions to:
• receive item level transaction details associated with a transaction from a point of sale system;
• receive item level specific payment information from a customer via a customer engagement device;
• compare the item level specific payment information to the item level transaction details;
• and
• provide a transaction authorization to the customer engagement device upon at least determining that the item level specific payment information is for an item indicated by the item level transaction details.

A payment collection processing and customer engagement platform gateway, comprising:

• a non-transitory storage medium storing instructions;
• and
• a processing unit coupled to the non-transitory storage medium that executes the instructions to:
• provide item level transaction details associated with a transaction received from a point of sale system to a customer engagement device;
• receive payment information for the transaction from the customer engagement device;
• and
• update an account in a payment collection processing and customer engagement platform accessible loyalty or rewards program based on an item indicated in the item level transaction details.