A team of scientists from University of Freiburg in Germany are developing a shoe with a sensor to automatically tie its laces that could be taken off when users click their heels together.

Its been 26 years since we saw them magically tightening Marty McFlys Nike boots in Back to The Future Part Ⅱ.

Now， self-tying shoelaces could actually become a reality this year， proving right one of the films fantastical predictions for what 2015 would be like.

Engineers have designed a shoe that can automatically lace up， adjusting itself to the shape of your foot.

Simply slip the trainer on and pressure sensors will tell the “smart shoe” when your foot is in position， triggering a tiny motor in the heel that pulls the laces tight.

When you want to take off the shoes， you click your heels together twice and the motor will release a spring in the shoes tongue， which loosens the laces enough for you to slip them off.

And the ingenious invention doesnt even need to be plugged in to charge or have its battery replaced because it runs on power generated by the swing of your foot as you walk.

Engineer Klevis Ylli of the Institute for Micromachining and Information Technology in southern Germany， said the shoes could help a variety of different people.

“One focus is that it could be used in shoes for elderly people who have mobility problems，” he said. “But it could also work for children， or as a lifestyle product.”

The design， which is still in a prototype phase， cleverly captures the energy of the foots swing when opposing magnets in each shoe move past each other. It then uses that power to charge a battery. An hour of walking is enough to tighten the laces once， and it requires no energy to undo the shoes because that relies on the spring alone.

德国弗莱堡大学的一个科学家团队正在研究一种可利用传感器自动系鞋带的鞋，而当使用者碰撞鞋跟时，鞋带就能自动解开。

距我们在电影《回到未来2》里看到马丁·麦克弗莱的耐克鞋自动系鞋带的神奇情景，已经有26年了。

如今，假如电影中对2015年的虚构预言有一个能成真的话，自动鞋带今年可能真会成为现实。

工程师们设计出一款鞋可以自动系鞋带，并可根据脚型自动调节。

当你的脚穿进去时，只需滑动控制器，压力传感器就会告知“智能鞋”，触发鞋跟的小发动机将鞋带系紧。

当你想要脱鞋时，碰撞鞋跟两次，发动机就会释放鞋舌部位的弹簧，它会松开鞋带让你脱鞋。

这项独创性的发明甚至无须充电或更换电池，因为它靠的是你走路时双脚的摆动来发电。

德国南部微加工和信息技术研究所的工程师克赖维斯·伊利表示，这种鞋可以帮助很多不同的人。

他说：“值得注意的是，这种鞋带可用于供行动不便的老年人使用的鞋，但它也可以供孩子使用，或者作为一种生活产品。”

目前，这项设计还是雏形。当两只鞋中极性相反的磁铁互相移动时，它能巧妙地从中获得能量。然后它将这些能量用于给电池充电。走一个小时的路产生的电量足以系紧鞋带一次，而解鞋带时因为只需依靠弹簧，因此无须能量。