Resistance is futile. You will be assimilated.
In the Culture novels by Iain M. Banks, futuristic post-humans install devices on their brains called a “neural lace.” A mesh that grows with your brain, it’s essentially a wireless brain-computer interface. But it’s also a way to program your neurons to release certain chemicals with a thought. And now, there’s a neural lace prototype in real life.
Made of nanomaterial, the developers refer to the mesh, which actually merges with brain cells, as "syringe-injectable electronics. In tests with mice, brain cells grew around the mesh and formed connections with individual wires. The devlopers believe that the mesh will ultimately have multiple uses, including monitoring brain activity and delivering treatment regimes for certain diseases.
They also believe that the "neural lace" will allow you to connect to computers wirelessly. And "thought-crime" could then become an even greater "sin" than it already is.