There was the time when people had to keep phone numbers in mind, then came the phonebooks on phones and mobile phones which were later enhanced with contact details like addresses and even photos. Now, Google unveiled that it will goes a step further. Attila Bodis, a Google engineer, unveiled on Google+ that coming early 2014, Google+ users, which have verified their phone number and have discovery turned on, will have their names and Google Profile photos displayed whenever they call you, or you call them. Again, this means that even if you don't have the caller's number saved in your own contacts, Google's Caller ID can help you identify who's calling or the other party can identify you.
Bodis linked in his blog post to a posting from the Android team which says that this feature is useful for businesses where Google matches numbers against the names of companies and services with a Google Places listing. Alternatively, this feature can be useful for Google Apps customers where users will never have to worry about missing a call from work again because the dialer checks from your Google Apps domain and will let you know if someone important is calling. And last but not least the people feature which Google plans to turn on in early 2014.
Well, beside being a useful feature - for public listings like companies - I see some privacy concerns here because it means that Google is increasing its data mining database because from early 2014 it knows in real time who's talking to whom. I'm not exactly sure if this is something everybody appreciate? At the moment, I only see two ways to lock Google out of this: by hiding your own mobile phone number, something you might not want at all or to turn off the Google+ "discovery Feature".
Last but not least it's yet not known how or if ODMs like HTC and Samsung will be able to include this feature into their GUIs like HTC Sense or Samsung TouchWiz or if this feature will be exclusively available for stock Android GUIs.
Cheers ~ Arne