After 6 hours of no use during the day i would want to send an alarm to my neighbor, after 36 h i would want to send alarms to sister, however if the alarms are still going after 48 h i would want everyone have sent a message.
Graduated alarms wound be very helpful if no one has responded to the first ones.
Personally i think three levels based on user specs.
Check on me. Level 1
There is something wrong level 2
SOS there might be serious problems level 3
And level 4, I'm very likely dead, stop my cats from eating me.
We don't always want everyone to respond to every level of problems and we don't always want everyone to know every level of issue. But when things must be very bad, we want any one possible to respond.
After 6 hours of no use during the day i would want to send an alarm to my neighbor, after 36 h i would want to send alarms to sister, however if the alarms are still going after 48 h i would want everyone have sent a message.
Graduated alarms wound be very helpful if no one has responded to the first ones.
Personally i think three levels based on user specs.
Check on me. Level 1
There is something wrong level 2
SOS there might be serious problems level 3
And level 4, I'm very likely dead, stop my cats from eating me.
We don't always want everyone to respond to every level of problems and we don't always want everyone to know every level of issue. But when things must be very bad, we want any one possible to respond.