Unfalsifiable electronic seals for closing containers; unfalsifiable electronic seals for closing trailers, and semi-trailers; Unfalsifiable electronic seals with a geolocation ability and comprising a burglar alarm. Electronic computing safety devices for the closures of containers, trailers, and semi-trailers, comprising a geolocation device allowing to identify the real-time position of containers, trailers, and semi-trailers, and to transmit an alert in case of infraction or robbery