If I am not mistaken, this type of jammer can severily affect people with pacemakers. But, as a Brazilian citizen, I can understand the feeling of being forced to listen other's people music.
yes, the new ones come with BT LE so you can monitor it via your smartphone (yeah really..) but I would not call that 'severely affected'
I'd imagine temporary (15 minutes?) disruption would be considered in the design of pacemakers or blood glucose monitors, but if you're using this in close proximity for a long period of time... then wouldn't there be problems?