The "Agent" half of the equation appears to be part of Sony's plans to rival assistant Alexa in Amazon's Echo. When I ordered my espresso (well, when the booth staff ordered it for me via a microphone to cut out the show floor noise), the Agent gave me a rundown of some of the other tasks it could do for me. Call mom, that kinda thing. But Agent is also present in Sony's wearable "Ear," and is the intelligent assistant that will let you respond to calls and reply to messages. This makes Xperia Agent a kind of in-house physical mascot for what's likely to be a technology we see creeping into even more gadgets from the company.
The problem, right now, is what if you want some of Sony's Agent devices, but are already invested in Amazon's Echo? Or any of the other similar products? This has been an issue long before the smarthome. Any new technology always goes through a "jostling" stage, like Blu-ray fighting off HD DVD. Everyone wants their idea to dominate, until a winner pulls ahead, and (ideally) others concede and make them compatible, or bow out. Xperia Agent technically can't bow though, so it wins by default? Or it might, whenever Sony commits and releases the darned thing.
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