The White House has launched a chatbot for Facebook Messenger which promises to let users make direct contact with the US President.

"The President receives thousands of letters a day via email or snail mail from people all over the country asking for help, needing advice or simply just wanting to be heard," said Facebook VP of messaging products David Marcus. "Now people can ask or tell him anything on Messenger, just as they do with friends."

In reality, though, only 10 randomly-selected messages sent via the bot each day will reach President Obama. Once users input their message, they'll be asked for their contact details and shown a video message of Obama saying that he appreciates the letters he receives from citizens.

It's just one of the many digital measures Obama has employed over the course of his election and subsequent presidency. For a full run-down of Obama's digital campaign in the 2012 election, and how Clinton is picking up that baton, check out our series of features here.

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