Sicpa Holding Sa

Biovotion Ag

Oscar De Feo

Andrea Callegari

Andreas Caduff

Mark Stuart Talary

Lorenzo Sirigu

Mathieu Gillieron

Martin Müller

The invention relates to a method and corresponding system for controlling, via secured transfers of tokens, operations of a plurality of interconnected devices having each a hardware trusted execution environment (TEE) and a controller, wherein each controller owns tokens attributed by a supervisor server and the TEE of each device is adapted to respond to a validation challenge via a zero-knowledge proof (ZKP) protocol, and generate and validate a single use ownership digital signature and its corresponding ownership signature validation challenge. The tokens can be transferred from one interconnected device to another in an online manner via a server or an offline manner via direct communication between the devices.

Method and corresponding system for controlling secure execution of operations by interconnected devices

The invention relates to a method of designing a refractive transparent or partially transparent light-redirecting surface, or a reflective light-redirecting surface, of a caustic layer comprising providing a discrete representation of an input target image, calculating a generalized power diagram for a set of image pixels pof the target image and computing a piecewise light-redirecting surface of the caustic layer based on a calculated optimal set of weights minimizing a cost function associated with the set of image pixels p. The invention also relates to an optical security element, a marked object, a method of visually authenticating an object and use of the optical security element for authenticating or securing against counterfeiting.

Method of designing a light-redirecting surface of a caustic layer, an optical security element comprising the designed light-redirecting surface of the caustic layer, a marked object, use and method of authenticating the object

A method and device for determining the glucose level in living tissue are based on measuring the response of the tissue an electric field as well as temperature measurements. In order to improve accuracy, it has been found that measurements in at least three frequency ranges between 1 kHz and 200 kHz, 0.2 MHz an 100 MHz as well as above 1 GHz should be combined since the response of the tissue in these different frequency ranges is ruled by differing mechanisms.

Wide band field response measurement for glucose determination

Growing community of inventors

Lausanne, Switzerland

Oscar De Feo