Abstract: A facility may allow an authorized user to sponsor other users to enter. Actions taken by those users may be associated with the account of the authorized user. Sensor data obtained at a portal may be indicative of whether a user attempted to provide credentials to a sensor at the portal, time between entry of users, attributes about the user, and so forth. Information about when the users have exited may also be obtained. For example, if three people entered one after another and then left at the same time, they may be deemed to form a group. Based on this information, the actions taken by the users in the group may be associated with the account of the authorized user.

Abstract: Described are implementations that facilitate group determination and association at entry into a facility so that activities of group members of the group are associated with the group and/or applied to a single account designated for the group. For example, if four individuals enter the facility together, the disclosed implementations determine whether the four individuals are to be associated as a group. If associated as a group, an account, such as an account of one of the individuals, is also determined and associated with the group. Activities, such as an item pick, performed by one of those individuals is associated with the group and if there is a fee or charge associated with the activity it is applied to the associated account.

Abstract: A facility may allow an authorized user to sponsor other users to enter. Actions taken by those users may be associated with the account of the authorized user. Sensor data obtained at a portal may be indicative of whether a user attempted to provide credentials to a sensor at the portal, time between entry of users, attributes about the user, and so forth. Information about when the users have exited may also be obtained. For example, if three people entered one after another and then left at the same time, they may be deemed to form a group. Based on this information, the actions taken by the users in the group may be associated with the account of the authorized user.