Touch the card below with your mouse to simulate the thermo-chromic reveal effect. Hold longer to reveal more of the hidden message.
Click and hold to activate the card
1. Your touch transfers heat to the thermo-chromic ink
2. At 98.6°F (body temperature), the ink becomes transparent
3. Hidden messages and photos beneath are revealed
4. Micro-embedded sensors trigger audio playback
5. The memory unfolds only for the intended recipient