| CPC G07C 9/22 (2020.01) [G07C 9/00309 (2013.01); G07C 9/00896 (2013.01); H04L 9/3213 (2013.01); H04L 9/3242 (2013.01); H04L 9/50 (2022.05); H04L 2209/80 (2013.01)] | 20 Claims |

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1. A computing device, comprising:
a memory configured to store a master key; and
a processor coupled to the memory, and configured to:
receive, from a user device, an order including a group of items;
generate a token to unlock a locker identified by a unique locker identifier in a locker system, wherein the group of items of the order are stored in the locker, wherein the token includes token data, and a message authentication code (MAC) to authenticate the token data, wherein the MAC is generated using a secret key obtained based on a unique derivation key (UDK) associated with the master key, and wherein the token data includes at least the unique locker identifier; and
deliver the token to the user device.
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