At the German Fraunehafer Institute, they created Smart Screw Connection bolts that control the tightness of the connection of parts and, in case of loosening, immediately begin to call for help, and also contact service personnel via instant messengers on the Internet. For this, the products are equipped with sensors for monitoring the fit of parts. In case of an alarm, the bolts access the Internet wirelessly.
It is noted that smart bolts can be used to monitor the condition of bridges, wind power plants and other infrastructure.