Context-aware computing

Grader A: hit

The Nest Learning Thermostat (2011) used built-in sensors and phone location to detect absence and learned users' schedules; sensor-rich smartphones with context features (Google Now 2012) were also on sale.

Test: D37 Horizons: context-aware devices buyable by ordinary consumers by 2019 (earlier counts).

• Nest Learning Thermostat (Wikipedia) (2011): Self-learning thermostat using sensors and phone location to detect occupancy and learn schedules, released 2011.

Grader B: hit

Smartphones with location/activity awareness (Google Now, 2012) and the Nest Learning Thermostat (2011), which senses occupancy and learns habits, were on sale before 2017.

Test: Consumers could buy context-aware devices by 2019 (earlier counts).

• Nest Learning Thermostat (2011-10): Consumer device that senses occupancy and learns user behaviour.