Though still being vetted by the public at large, Apple's Touch ID identity sensor seems to be a success based on early impressions. Most prominent reviewers have high praise for the biometrics tech included in the new iPhone 5s, after powerful initial skepticism[i]. Naturally, with such a successful launch and presumed security benefits comes speculation as to what other Apple products will get Touch ID next.
For starters, there is a lot of talk that Touch ID will be included in the iPad 5 expected to be announcement this Tuesday. Of course, inclusion in the iPad 5 is a no brainer. So it is with the iPad mini and Apple's forthcoming non-premium phone models from here on out, if not this Tuesday. This year Touch ID is a premium feature, but there will be no good argument for not securing ultra portable devices in the near future. Further, screen size will likely be the next premium feature or model separator for the next batch of iPhones released. Thus, Touch ID will be free to spread its wings. Add the fact that Apple's margins will increase with the proliferation of Touch ID, and we can bank on its inclusion in lower tier ultra portables. We can of course expect Touch ID to work in exactly the same way on the aforementioned devices, as it does now on the iPhone 5s. Thus, Touch ID will be far more interesting on the MacBook Pro than it will be on these devices, at least in its functionality.