Re: Effective solution
Profit is the mother of all invention so logically, such biomechanical enhancements are likely to be the result of commercial interests and would almost certainly have wireless network access for content distribution.
In concert with such devices, movies would likely be a drive-in cinema-style, where you can see it if you're there but can't hear anything unless you pay for the audio connection.
Or, perhaps the movies themselves would require encryption codes to view or hear anything. these would possibly be biometrically linked but certainly uploaded directly to whatever magic device is enabling all this.
Such devices would of course be cracked sooner or later or perhaps illegal upgrades would be available ("get yourself 'chipped'") to enable recording and dissemination of 'recorded' content. Such modification would of course void any warranties but there would still be people willing to do that.
And if you thought companies scraping your contacts from your iPhone was bad . . .
Or maybe I am too optomistic - perhaps by that point 'big content' will have even more of the government (in the US especially) bought and paid for and such a device would be made illegal as we all know that the profitability of Warner Brothers is more important that human advancement. (Though your opinion on what constitutes an advancement may differ : )