Maybe, but I would say it's a little less conspirator or crazy since we know such systems are being deployed to track people.
Radio waves never could read your thoughts or other crazy stuff so it would be less loony to see someone with a printed card than wearing a tinfoil hat.
Could electromagnetic radiation ever disrupt one's thoughts or cause damage to brain tissue? Do you think there has been any research into altering brain function wirelessly? If such a technology could be implemented, do you think you would be made aware of its existence?
Radio waves never could read your thoughts or other crazy stuff so it would be less loony to see someone with a printed card than wearing a tinfoil hat.