$3\mathrm{.}2\mathrm{.}1$ Customer Service: How would pervasive computing technologies, such as mobile devices and wearable technology, improve customer interaction and response time at the stores? $(10$ marks$)3\mathrm{.}2\mathrm{.}1$ Customer Service: How would pervasive computing technologies, such as mobile devices and wearable technology, improve customer interaction and response time at the stores? $(10$ marks