...biometric authentication ensures security along with convenience because they are unique to the individual and cannot be stolen...

Biometrics are unique and cannot be stolen... yet.

3D printing technology can already be used to print bones, skin, etc.

Plus there's this technology with which you can scan an entire body and create a virtual replica of it. It's mostly used by the movie industry at the moment and it's expensive as hell. But I think there will be enough demand for such a thing from the general public that the price will go down like it has with computers and mobile phones.

https://www.digitaltrends.com/photography/body-labs-wants-create-virtual-doppleganger/

Plus we have this AI and quantum computers that are just now taking off. These two technologies combined will create technologies impossible to predict at the moment.

Plus there's this:

All this developments come with a very tangible risk. Right now it is already possible, with games such as Dragon Age: Origins or Skyrim, to choose the appearance of your avatar. Similarly, the same will be possible with the interactive software developed by the porn industry. And this will include a pretty disturbing possibility: customizing the appearance of the virtual presences in your porn interactive software. This will include not only choosing what their hair color is, but deciding the shape of their face, nose and ears. There is yet another, more problematic possibility: using another person’s picture to create a virtual body with their appearance.

http://www.davidyerle.com/the-future-of-porn-a-disturbing-possibility/