Following the catastrophic pathogen outbreaks of 2042, automated militarized containment systems established Quarantine Zones, most notably along country borders cordoning off large regions. Some countries, like Switzerland, took it a step further by sub-sectioning the regions into smaller, more manageable zones.
Managed by persistent drone overwatch and fortified by EMP-hardened bunkers, when activated, these zones are theoretically off-limits; in practice, they function as convenient dead-drops and havens for those who require total anonymity.