- Hold trash over the basket.
- Let go of trash.
See, some trashcans have a lid, probably so the trash won't fall out or smell depending on what's thrown in. Then all one has to do is lift the lid or step on the lever at the bottom. Easy.
Here's the problem with an automatic trashcan: you have to make sure the sensor senses you for it to open at all, and then you have to wait for it to open. You could let go too soon and miss, or you many even wait too long and miss because it starts to close.
This probably doesn't happen often to those who have automatic trashcans, but this invention seems to be an unnecessary one. At least, unnecessary for most. For those people who don't have a leg/foot (perhaps because an accident or heroic action), an automatic trashcan is very practical.
I first saw these at an optometrist and everyone there, well, had all their limbs. The company had recently moved, so I understand they were buying new technology, but... is buying an automatic trashcan really worth it?