Abstract: Watch (1) including time display means (8; 10) covered by a crystal (4). This watch includes an interface device for controlling a computer cursor. It forms a contactless watch-mouse. For this purpose, a plurality of touch sensitive sensors are arranged so that their sensitive pads (16) are supported at least partially by the crystal (4). The sensitive pads are arranged in particular in the shape of a matrix extending over most of the crystal (4). The click function is performed using a push-button (14) associated with electric contactor or by a pressure sensor or by a touch sensitive sensor provided for this purpose.

Abstract: There is disclosed a method and a system for accessing information and/or data available on a wide area computer network (100), such as the Internet. A first modulated acoustic signal (A) is transmitted to a group of potential users each provided with a portable communication unit (1, 1*), this first modulated acoustic signal including at least one identifier (ID—1, ID—2, ID—3, . . . ) associated with a link to a determined site of the wide area computer network. These identifiers are stored in the portable communication unit then subsequently downloaded to a computer terminal (50, 51, 52) connected to the wide area computer network. After the downloaded identifier or identifiers have been compared with a determined list of identifiers (ID_A, ID_B, ID_C, . . . ), a list of links (Link_A, Link_B, Link_C, . . . ) to sites corresponding to the downloaded identifier or identifiers is generated by the computer terminal.