I've always been intrigued with SCA's. In fact, I'm a little concerned right now about my new Boveda Butler for my cigar humidor. It's a bluetooth device. If my spousal unit figures out how to access and change the readings I could falsely believe that they are all snug and cozy when in fact they are like raisins.
But, back on topic. I am performing RMF for a highly engineered system. There are lots of specialized components and boards that would benefit from this new method of security. With the minimal cost of energy this seems like it could revolutionize hardware security.
This looks like a really useful development, and while I appreciate it says in the article the technology is commercially viable, I hope the team involved actually have the commercial nous required to bring this to market!
The application of this development is said to be geared towards very small devices where typical TEMPEST protections might not be appropriate.
Although, if you're suggesting this development will be co-opted for the sole use by certain military organisations then I would consider that the opposite of bringing it to market!
Wouldn't be a bad idea to include random power fluctuations in design. Just had a conversation with someone yesterday that brought up the ability of the power companies to approximate your activities inside the house remotely based on minute changes in power consumption, (down to the fridge door being opened), using smart meters.