Occurred on December 30, 2020 / Southend-on-sea, Essex, UK
Info from Licensor: "I use this technique to hide personal information on package labels or receipts before throwing them out. It's common knowledge to me now but often amazes people when I show them implying it's not a really common thing to know. The paper changes color with heat, and you don't have to struggle to rip off labels or scribble out your name. A hairdryer or friction could work also."
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