these guys are working on optical hardware for significantly faster random projections.. looks interesting<p><a href="https:&#x2F;&#x2F;sites.google.com&#x2F;site&#x2F;companylighton&#x2F;home&#x2F;press" rel="nofollow">https:&#x2F;&#x2F;sites.google.com&#x2F;site&#x2F;companylighton&#x2F;home&#x2F;press</a>