A South Australian influencer has used her TikTok to warn others to be careful about sharing personal information in public, after a stranger memorised her phone number while she recited it to a cashier.

Elle Barker said she visited a Dan Murphy's store with her boyfriend to buy a bottle of wine, when she read out her phone number at the check-out to access her customer membership discount.

About three hours later, Ms Barker said she checked her mobile phone to discover she had received a text message from an unknown number which read, 'Do you think that you are immune'.

"That's a creepy message from an unknown number," Ms Barker said in the TikTok video.

"I reply – and I'm like I want to sound like a guy – so I just reply, 'Wrong number mate'."

Ms Barker, who has more than 13,000 fol

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