BMIs let users interface with systems without keyboards—brain-nets (wearable) or skulljacks (cybernetic implants). *Worlds of Android* notes military origins and early consumer models popular with Netcriminals and youth.

SotB runners often jack in via BMI; ice like Janus and Viktor punish BMI users with wounds and criticals instead of mere strain. Burnout slang covers BMI damage as much as drugs.

Related gear: skulljack, spinal modem, portable rigs.