2 ms·Sovjet listened successfully to typewrites back in the 1970s.by zaxomi 3y agoSovjet listened successfully to typewrites back in the 1970s.mejutoco 3y agoImpressive. To be fair, a lot of typewriters jam if you press more than one key at a time, plus they are very loud.xxs 3y agoWhat's more impressive that the vibration of the glass windows can be used, too.