On the one hand this looks incredible, on the other, the set-up seems like a hassle. This Ditto system projects sewing patterns directly onto your fabric, saving you the steps of having to cut, pin and trace paper patterns.

As for the hassle part, you've got to set the projector up on the included floor-to-ceiling brace, then calibrate the thing to your worksurface. Furthermore, you need a subscription to Ditto ($10/month or $100/year), which gives you access to their patterns, though you can also upload your own. The company describes this as a convenience, as their service allows you to customize patterns prior to projecting them.

One killer application is that, since the pattern is projected, it's easy for the user to move fabric pieces around prior to cutting, to ensure plaids and stripes line up where you want them:

Here's an overall demo of setting up and using the system:

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The Ditto system runs $400, plus the subscription.