| CPC H04L 9/3228 (2013.01) [H04L 9/0863 (2013.01); H04L 9/3213 (2013.01)] | 20 Claims |

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1. A method comprising:
receiving, by a processing computer, a group interaction request message for a group interaction from a user device within a group of user devices;
responsive to receiving the group interaction request message, determining, by the processing computer, a token;
providing, by the processing computer, the token to the user device;
receiving, by the processing computer, an authorization request message comprising the token;
responsive to receiving the authorization request message, generating a one-time password, the one-time password comprising a plurality of password portions;
transmitting, by the processing computer, the plurality of password portions to the group of user devices, respectively;
receiving, by the processing computer, from one of the user devices within the group of user devices, the one-time password; and
initiating, by the processing computer, authorization of the group interaction using credentials associated with user devices in the group of user devices.
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