§Current
magnetometer gets magnetized over time
•circumvented by hardware reset circuitry
•
§Composition,
testing, & monitoring tools need further development
§
§“Byzantine” motes
are a serious issue for middleware services
•under low-power motes do not fail gracefully
•sensor debonding can yield unpredictable behavior
•
§Architecture for 1km
-- 100km scale is best developed in context of application scenario