if i want to add a "image search" feature to amazon, for example, i take picture of the certain item, amazon can find it for me . 1. answer the

if i want to add a "image search" feature to amazon, for example, i take picture of the certain item, amazon can find it for me .

1. answer the question "How can this feature implement IOT?"

2 should answer the question "How can this feature implement big data?"

3.should answer the question "What can I do to keep myself or my users safe (in an information systems sense) when using this feature?" 

i'm taking information technology class, which is one of my business class.be specific, thank you.