The world’s largest tech companies have agreed to tackle what they are calling deceptive artificial intelligence in elections. Amazon, Google and Microsoft are among 20 firms who have signed the accord committing them to fighting voter-deceiving content, pledging to deploy technology to detect and counter the material. But one industry expert says the voluntary pact will do “little” to “prevent harmful content being posted”. Brad Smith, president of Microsoft, said: “We have a responsibility to help ensure these tools don’t become weaponised in elections.” The accord’s signatories have vowed t…