Queensland drivers will be able to add emojis to their personalised plates next month.

Five of the cartoon faces familiar to smartphone users will be available, including "laugh out loud", "wink", "sunglasses", "heart" and "smile" emojis.

The emoji plates will be available from March 1 and must be accompanied by a mixture of three letters and two numbers, according to Personalised Plates Queensland.

However, a Queensland law expert has questioned whether the plates would be a hindrance to vehicle identification.