Vessels in the Middle East -- here, a cargo ship in the Strait of Hormuz -- are battling difficulties with their outdated GPS systems. But "many ships only listen to the original civilian GPS signal, which is called the L1 C/A signal. - Spoofing -Jamming a GPS signal is "not that complicated," said Katherine Dunn, the author of an upcoming book of the history of GPS, "Little Blue Dot." - Clocks -Today, GPS signals are not just used to determine location; they also power onboard clocks, radar systems and speed logs, Dunn said. - Defensive jamming -Signal jamming is undoubtedly being used both offensively and defensively.

Source: Bangkok Post March 08, 2026 04:59 UTC