Traces all done
- Confirmed that the intruders are who we thought they were, sigh
- Get permission to set up pen registers
- Record numbers called, caller-id
- Left running for a month or so
We finally get permission to set up pen registers. These attach to the phone line going to a suspectís house and record the calling number for all incoming calls (caller-id) and the called number for all outgoing calls.
Thereís a collection station (strange old laptop with lousy software) that receives this information from the devices.