Hydrogen fuel cells for cars
Replacing combustion engines with hydrogen fuel cells can help make cars more... Read more
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Lenovo has a smartphone with a built-in projector but with a twist – the projection is interactive – you can turn any surface into a touch screen!
Here’s one from Amazon
Samsung tried something like this a few years back, but it did not pick up. However, the idea seems to have gained momentum in the past few years
A built-in projector is one of the most useful add-on feature a smartphone can have