Some embodiments include apparatuses to fulfill customer orders comprising a motorized transport unit; a product pick unit (PPU) that cooperate with the motorized transport unit; a wireless communication network; and a central computer system configured to communicate with the multiple motorized transport units and the plurality of product pick units, and comprises a control circuit and memory storing instructions executed to cause the control circuit to: communicate an instruction to the motorized transport unit and direct the motorized transport unit to transport the product pick unit to a determined first location within the shopping facility proximate to where a first product having been ordered is located; and communicate an instruction to the product pick unit cooperated with the motorized transport unit and direct the product pick unit to retrieve the first product.

Some embodiments include apparatuses to fulfill customer orders comprising a motorized transport unit; a product pick unit (PPU) that cooperate with the motorized transport unit; a wireless communication network; and a central computer system configured to communicate with the multiple motorized transport units and the plurality of product pick units, and comprises a control circuit and memory storing instructions executed to cause the control circuit to: communicate an instruction to the motorized transport unit and direct the motorized transport unit to transport the product pick unit to a determined first location within the shopping facility proximate to where a first product having been ordered is located; and communicate an instruction to the product pick unit cooperated with the motorized transport unit and direct the product pick unit to retrieve the first product.

Methods and apparatuses are provided, some apparatuses comprise: a location controller separate from a motorized transport unit, comprising: a transceiver configured to receive communications from the motorized transport unit; a control circuit; a memory storing computer instructions that when executed by the control circuit cause the control circuit to perform the steps of: obtain, from the communications, a unique light source identifier of a light source detected by the motorized transport unit, and relative distance information determined by the motorized transport unit through an optical measurement; process the at least one unique light source identifier and the relative distance information relative to a mapping of the shopping facility; and determine, in response to the processing, a location of the motorized transport unit within the shopping facility as a function of the at least one unique light source identifier and the relative distance information.

Methods and apparatuses are provided, some apparatuses comprise: a location controller separate from a motorized transport unit, comprising: a transceiver configured to receive communications from the motorized transport unit; a control circuit; a memory storing computer instructions that when executed by the control circuit cause the control circuit to perform the steps of: obtain, from the communications, a unique light source identifier of a light source detected by the motorized transport unit, and relative distance information determined by the motorized transport unit through an optical measurement; process the at least one unique light source identifier and the relative distance information relative to a mapping of the shopping facility; and determine, in response to the processing, a location of the motorized transport unit within the shopping facility as a function of the at least one unique light source identifier and the relative distance information.

A central computer system directs a motorized transport unit through a retail shopping facility to a particular mobile item container having at least one item disposed therein, that item being designated for return to a particular department within the retail shopping facility such that this item can then again be presented for sale. After causing that motorized transport unit to physically attach to this mobile item container, the central computer system then directs that motorized transport unit through the retail shopping facility with the attached particular mobile item container to the one or more departments to which the item or items are to be so returned.

A central computer system directs a motorized transport unit through a retail shopping facility to a particular mobile item container having at least one item disposed therein, that item being designated for return to a particular department within the retail shopping facility such that this item can then again be presented for sale. After causing that motorized transport unit to physically attach to this mobile item container, the central computer system then directs that motorized transport unit through the retail shopping facility with the attached particular mobile item container to the one or more departments to which the item or items are to be so returned.

Systems, apparatuses, and methods for determining item availability are provided. A computer implemented method for determining item availability in a shopping space comprising: receiving a request for an item for purchase from a customer, querying an inventory database to determine whether the item for purchase is in stock, in an event that the item for purchase is not in stock according to the inventory database: determining an out of stock response to present to the customer, in an event that the item for purchase is in stock according the inventory database: instructing a motorized transport unit to travel to a display space in the shopping space corresponding to the item for the purchase, determining whether the item is available in the display space based on information captured by one or more sensors of the motorized transport unit, and in an event that the item for purchase is not available in the display space: determining an item unavailable response to present to the customer.

Systems, apparatuses, and methods for determining item availability are provided. A computer implemented method for determining item availability in a shopping space comprising: receiving a request for an item for purchase from a customer, querying an inventory database to determine whether the item for purchase is in stock, in an event that the item for purchase is not in stock according to the inventory database: determining an out of stock response to present to the customer, in an event that the item for purchase is in stock according the inventory database: instructing a motorized transport unit to travel to a display space in the shopping space corresponding to the item for the purchase, determining whether the item is available in the display space based on information captured by one or more sensors of the motorized transport unit, and in an event that the item for purchase is not available in the display space: determining an item unavailable response to present to the customer.

A system for monitoring and controlling shopping cart usage comprises a wheel assembly that attaches to a shopping cart. In some embodiments the wheel assembly includes a wheel, a brake that can be activated to inhibit rotation of the wheel, a controller that controls the brake, a VLF receiver, and an RF transceiver. The RF transceiver may, for example, operate in a 2.4 GHz frequency band. In some implementations, the RF transceiver may be used to detect entry of the shopping cart into a checkout area of the store, and the VLF receiver may be used to detect that the shopping cart is exiting the store. The controller may activate the brake if the shopping cart attempts to exit the store without first passing through a checkout area.

A system for monitoring and controlling shopping cart usage comprises a wheel assembly that attaches to a shopping cart. In some embodiments the wheel assembly includes a wheel, a brake that can be activated to inhibit rotation of the wheel, a controller that controls the brake, a VLF receiver, and an RF transceiver. The RF transceiver may, for example, operate in a 2.4 GHz frequency band. In some implementations, the RF transceiver may be used to detect entry of the shopping cart into a checkout area of the store, and the VLF receiver may be used to detect that the shopping cart is exiting the store. The controller may activate the brake if the shopping cart attempts to exit the store without first passing through a checkout area.