Abstract: Among other things, information is maintained that associates competitors with respective territories for which the competitors have rights that are to be exclusive relative to other competitors for items associated with the territories. A user can enter, through a user interface, an expression of interest that can be associated with one of the territories. In response to the expression of interest, a user is automatically enabled to interact with the competitor that has the exclusive right to the territory, without automatically enabling the user to interact with a competitor that does not have the exclusive right.

Abstract: Among other things, information is maintained that associates competitors with respective territories for which the competitors have rights that are to be exclusive relative to other competitors for items associated with the territories. A user can enter, through a user interface, an expression of interest that can be associated with one of the territories. In response to the expression of interest, a user is automatically enabled to interact with the competitor that has the exclusive right to the territory, without automatically enabling the user to interact with a competitor that does not have the exclusive right.

Abstract: Among other things, a physical device is determined to be validly issued by a party that issues physical devices that include security features. At least a portion of a photographic or video image of the physical device is processed automatically to determine if the physical device includes at least one of the security features.

Abstract: Among other things, information is maintained that associates competitors with respective territories for which the competitors have rights that are to be exclusive relative to other competitors for items associated with the territories. A user can enter, through a user interface, an expression of interest that can be associated with one of the territories. In response to the expression of interest, a user is automatically enabled to interact with the competitor that has the exclusive right to the territory, without automatically enabling the user to interact with a competitor that does not have the exclusive right.

Abstract: Among other things, a user of a mobile device who is delivering an ordered product from a store to a customer at a location can confirm that the customer is a proper person to receive the ordered product.

Abstract: A locking knife and sheath combination having a knife of unitary construction. A flexible engagement tab is provided on the handle of the knife for engaging with a tab receiving opening provided in a front portion of the sheath. Upon engagement of the tab with such opening, the knife is securely retained in the sheath. Removal of the knife from the sheath is accomplished by depression of the tab through the tab opening of the sheath. Sheath clamping means are also provided on the opposite side of the sheath and include a clamping arm which pivots with respect to the rearward surface of the sheath through means of rotation of a thumbwheel adjustment member. Rotation of the adjustment member allows for the clamping arm to selectively clamp the sheath to an article. A clamping device is provided for a folding knife having a thumbwheel adjustment member.