bidirectional

You can attach this tracker to any item you want to keep tabs on, and with its smart anti-loss feature and bidirectional alert, you can track your lost items using your smartphone.

The system is bidirectional, too, so it can pump out enough energy from its battery packs to power a small campsite or work as a simple generator during a power outage.

Hayashi and Ivry focused on an entirely different brain region and mechanism than the Weizmann scientists did — and yet both studies observed a similar bidirectional effect on time perception.