# Key Points from #hplusroadmap IRC Discussion

• Japan developed an inexpensive 3D-printed road map system for the visually impaired, demonstrating practical applications of 3D printing for accessibility.

• Participants discussed verifiable computation research, including papers on delegation across multiple servers and verification of computations over large public logs, highlighting interest in cryptographic security.

• The channel explored biometric monitoring techniques, specifically debating whether impedance spectroscopy and skin conductance could effectively measure electrolyte levels in the body or would primarily detect sweatiness.

• A DHTML tool for designing organically-shaped gears was shared (http://canonical.org/~kragen/sw/dev3/gears/), which uses iterative design to satisfy mechanical constraints like preventing collisions at specific rotation ratios.

• The group analyzed Bitcoin security, discussing how economic incentives might limit exploitation (as hacks would crash Bitcoin's value) and debating whether the absence of successful attacks indicated security or merely lack of discovery of vulnerabilities.

• A critical Drupal security vulnerability (SA-CORE-2014-005) involving SQL injection was highlighted as affecting numerous high-profile websites, including government sites and financial institutions, despite Drupal powering only about 2.1% of websites globally.