# Summary of #hplusroadmap IRC Log (April 29, 2015)

• A discussion occurred about the Apple Watch's inability to function properly with tattoos, with users speculating whether this limitation might also affect burn survivors or be influenced by skin color (the article mentioned it was not affected by skin color).

• A user shared information about the Selectron tube, an early form of digital computer memory developed by Jan A. Rajchman at RCA under Vladimir Zworykin's direction.

• There was speculation about patterning a thin glass plate from the backside and getting DNA to bind complementarily to the charges patterned on it, suggesting an interest in DNA-based computing or storage.

• A discussion about intellectual property law revealed that microcode (software embedded in silicon) is covered by copyright, and the Semiconductor Chip Protection Act of 1984 (SCPA) makes integrated circuit layouts legally protected.

• The SCPA permits competitive emulation of chips through reverse engineering, with specific legal tests for determining infringement when reverse engineering is involved.