A married couple allegedly used hidden cameras and earpieces to swindle a Sydney casino.

The pair from Kazakhstan headed straight to the Crown Casino in Barangaroo after landing in Australia in October, NSW Police alleged on Sunday.

The 36-year-old woman and her 44-year-old husband bought memberships, and visited the casino several more times in the two months that followed, winning a total of $1,179,412.

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But the eye-watering wins piqued the attention of casino staff.

It will be alleged that the couple used mobile phones to capture images of the table, and deep-seated earpieces to communicate instructions for wagering on card games.

Police allege this method allowed them to “ultimately cheat the casino.”

A couple has be charged after allegedly cheating the Crown Casino out of $1 million.A couple has be charged after allegedly cheating the Crown Casino out of $1 million. Credit: 7NEWS/NSW PoliceClothing cut to disguise hidden cameras were allegedly seized by police.Clothing cut to disguise hidden cameras were allegedly seized by police. Credit: NSW PoliceThe couple was arrested in the casino and charged over the ruse.The couple was arrested in the casino and charged over the ruse. Credit: 7NEWS

The woman was allegedly spotted wearing a small, discrete camera attached to her shirt, by a casino staff member on November 27.

Both the husband and were arrested at the casino.

The couple allegedly carried small, magnetised probes, batteries, and a mobile phone with a fitted attachment allowing the camera function of the phone to discretely view, capture or record images.

A small custom-made mirror attachment for the same mobile phone was also seized.

Police later executed a search warrant at the couple’s accommodation on Kent Street in Sydney, where police allegedly seized gambling props, high end jewellery, and $2000 euros.

The couple have each been charged with dishonestly obtain financial advantage etc by deception.

They were refused bail on November 28, and will appear in court again at a later date.

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