Russia marvels at high-tech British "spy stone"
FSB spokesman Sergei Ignatchenko praised the high-tech spy stone, which would look at home in a James Bond film, and listed its extraordinary qualities.
The stone was revealed by the FSB on Sunday in a television program that apparently showed four British spies using it as a dead letter drop.
"This is like space technology in its qualities. You could throw this stone from the 9th floor, it can survive a long period in water, it has several different kinds of defense," Ignatchenko said in televised comments.
"According to our experts' assessments, this device costs several tens of millions of pounds. You could only create this technological wonder in laboratory conditions."