When the Lovebox receives your message for a loved one, the heart wiggles until she/he lifts the lid and reads the message on the display hidden inside the box.
The initial app implementation polls a GitHub Gist for new content. If it sees a new message (text or image) it displays it and sets a servo in motion to which the heart is attached. When the lid is opened a photoresistor (acronymed LDR for Light Decreasing Resistance, or light-dependent resistor) registers the extra light in which case the app stops the servo.
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