What is the difference between Keyless Entry and Smart Key Technology?

Smart Key demo on 2013 Camry Hybrid

[@kcsandelectronistzsolt7084]

What is the difference between Keyless Entry and Smart Key Technology?

[@jamiesmith4293]

So if I'm camping in my car, obviously with my key inside, anyone can enter my car in the middle of the night?

[@grasshopper3085]

Is this system safe?

[@ShehabElDabaa]

Thanks for the demo