And so there's a barcode on that product that tells the computer exactly what the product is.

And, likewise, we infected them with parainfluenza 3 that's a paramyxovirus and you see a little barcode here.

Types of barcode scanners Technology Barcode readers can be differentiated by technologies as follows Pen type readers Pen type readers consist of a light source and photodiode that are placed next to each other in the tip of a pen or wand.

And on each ballot form there is this encrypted value in the form of this 2D barcode on the right.

Microsoft compliant Pocket PCs can be used with many add ons such as GPS receivers, barcode readers, RFID readers, and cameras.

All right, I can see a rhinovirus and here's the blow up of the rhinovirus's little barcode but what about different rhinoviruses?

You can see that this barcode is the same family, but it's distinct from parainfluenza 3, which gives you a very bad cold.

You put a little piece of rice in the foot of a penguin that has a barcode, so it tells you who it is.

What we did is, we took tissue culture cells and infected them with adenovirus, and you can see this little yellow barcode next to adenovirus.

And so it is not any one stripe or something that tells me I have a virus of a particular type here it's the barcode that in bulk represents the whole thing.

And so, that's a hard way to look at things, so I'm just going to encode things as a little barcode, grouped by family, so you can see the results in a very intuitive way.

You can track it back to the factory. Once you can track it back to the factory, you can look at the manufacturing processes that were used to make it, and if it's virtuous, you can label it that way. Or if it's not so virtuous, you can go into today, go into any store, put your scanner on a palm onto a barcode, which will take you to a website.