inessential

The programmers in these institutes are often sidelined, and their work is seen as inessential.

I thought this looked cooler and they're inessential to reading the time.\nI'll try and port it to Apple watch / Android wear when they release their proper watch face SDKs.

"The examples in the page are utterly inessential and confusing - The back arrow rotating?

I expect that a lot of programs would end up being designated as "necessary", with choices allowed for only a few which are deemed inessential.

It's far more likely that you will build a secure system by following basic security practices like isolating services and giving each the minimum privilege that it needs, doing code review, keeping inessential services off of important machines, using prepared statements rather than building SQL queries from user-supplied strings, and so on, as well as using off-the-shelf security components that have been well tested like the above hash algorithms, than you will by designing your own password system using some novel technique to spread the secret out among multiple machines.