Anything that disrupts the enemy's tactics could probably be considered valuable. Induction loops would be harder to build, transport and disguise vs a spool of piano wire and a friction fuze.
The tricky part is making sure it doesn't lull the people using it into a false sense of security. Once you identify the new tactic, you can adapt to it; once they start using magnetic triggers, you send your little RC car out with a big Neodymium magnet mounted on it or whatever.
The tricky part is making sure it doesn't lull the people using it into a false sense of security. Once you identify the new tactic, you can adapt to it; once they start using magnetic triggers, you send your little RC car out with a big Neodymium magnet mounted on it or whatever.