Abstract: A smart phone used by an end user includes a positioning circuit; a computer readable memory; and an app resident on the computer readable memory. The app is configured to cause the positioning circuit periodically to determine a preferred location of the smart phone and transmit the preferred location to a remote server via a network. The app executes a plurality of local rules based on the preferred location and receives location-specific content that is selected based on the preferred location from the server via the network. The location-specific content is presented to the end user. A software development kit for generating a smart phone app facilitates quick app generation.

Abstract: A fast locking device for at least one tool (9) on at least a guide element (8) comprising: a fixing element (2) provided with at least one first opening (29) for the through-passage of at least one tool (9); a base (3) removably lockable to the fixing element (2), via clutch means, provided with a stop surface (31), opposite to the fixing element (2), at an end of which there is a locking element (38) to at least partially engage the guide element (8); a hook-like element (4) revolvingly locked to the base (3) between a release condition (A) and a locking condition (B) for the guide element (8); a cursor element (7) sliding internally to the fixing element (2) and to the base (3) and provided with at least one second opening (79) and one hollow (74) which engages a projection (47) present on the hook-like element (4); a locking means (6) which internally engages the cursor element (7) and is provided with an inner end (69) that leads to the inside of the first opening (29) and of the second opening (79) a