Abstract: Communication method and system for bidirectional data transfer among smart modules (101-111) attachable to a weapon (100), where messages are encoded by modulating an electric supply provided by at least one powered rail (200, 200?, 200?, 200??). At least two priority levels are defined among smart modules supplied by the powered rail (200, 200?, 200?, 200??). High-priority smart modules (600) are allowed to transmit high-priority data message (741) directly; whereas low-priority smart modules (500) are required to transmit a data transfer request message (723) and wait for a data transfer permission message (731), which is only sent when no high-priority data message (741) is being received.

Abstract: The present invention relates to a safety device for firearms that enables providing additional safety to the original safety of the weapon itself, such that safety conditions prevail in either of the two systems, the original safety of the weapon or the additional safety device object of the present invention, such that if either of the two is in safe or in locked position, the firearm is in safe or locked position, the safety device for firearms being configured to be implemented in a new firearm or an existing firearm, wherein the invention further relates to a safety method for firearms.

Abstract: Communication method and system for bidirectional data transfer among smart modules (101-111) attachable to a weapon (100), where messages are encoded by modulating an electric supply provided by at least one powered rail (200, 200?, 200?, 200??). At least two priority levels are defined among smart modules supplied by the powered rail (200, 200?, 200?, 200??). High-priority smart modules (600) are allowed to transmit high-priority data message (741) directly; whereas low-priority smart modules (500) are required to transmit a data transfer request message (723) and wait for a data transfer permission message (731), which is only sent when no high-priority data message (741) is being received.

Abstract: The present invention relates to a safety device for firearms that enables providing additional safety to the original safety of the weapon itself, such that safety conditions prevail in either of the two systems, the original safety of the weapon or the additional safety device object of the present invention, such that if either of the two is in safe or in locked position, the firearm is in safe or locked position, the safety device for firearms being configured to be implemented in a new firearm or an existing firearm, wherein the invention further relates to a safety method for firearms.