Researchers developed an octopus-inspired adhesive patch that changes color to display pulse rate when attached to skin.

What it means

This is a report on a prototype wearable patch, developed by a group reported to be at NTNU in Norway, that grips skin with octopus-like suction cups and changes color with the wearer's pulse. The color shift gives a visual readout of heart rate, and the design is described as needing no electronics or battery — a possible low-cost alternative to a smartwatch for pulse monitoring.

Accuracy & sourcesGrounded

The likely primary source is a new research paper from the NTNU group, and the linked Phys.org story is a science-news write-up one step removed from that paper. The core claim — that color changes track pulse — is the paper's laboratory demonstration, and the octopus-sucker adhesion is consistent with prior biomimetic adhesive work, though real-world accuracy and durability beyond the prototype are not established by this report.

How new

Genuinely new coverage: the Phys.org article sits in the verified publication window of 20 October 2026.

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