Conversion strategy – displaying button for not allowed action and redirecting on click

Normally it’s a bad idea to allow users to click, or even see, buttons for things he cannot do, but would it be ok as a conversion strategy? Imagine this simple scenario in a marketplace app:
The user cannot publish products…
Why do (traditional) vending machines have push-doors?

Most traditional vending machines that I’ve used have these “push” flaps/doors at the bottom (where the snacks/drinks are supposed to come out). Why are these there? Without push-doors, people would easily be able to see if t…
How do i create scroll-based interactions in Principle?

I’m trying to make an interactive mobile prototype that is basically a sticky bottom drawer that displays when the user scrolls up.
Here’s how the user story would go:
-user scrolls down to read a page
-user gets to a ce…
Product filters – how to explain to the user if they are inclusive or exclusive

I am setting up some product filters for my site. I was getting quite confused until I got my head around it all.
So lets take something simple, like a clothing site, with product filters. Now some of the filters might be br…
Table row & selection pattern options?

Has anyone encountered a table pattern which allows copy and pasting of multiple cells from one table to another? Can anyone suggest any examples or implementations in the wild?
how many fonts should have a website?

I thing if your website have only one font, it will look like a simple and bored website.. I use two or three fonts for improve the experience in the site.
Which factors can be considered when adding a font to a website (e.g. performance, visual heirarchy, balance) [on hold]
![Which factors can be considered when adding a font to a website (e.g. performance, visual heirarchy, balance) [on hold]](https://uxsharelab.com/wp-content/themes/proxima/images/thumbnail-placeholder.gif)
The number of fonts a website should have is largely subjective. Are there measurable, or at least logical pros/cons to consider? When is it justified to add another font to a website?
Rewards System: Points or Money?

Scenario
We have a soon to launch app which includes a rewards system. These rewards are real money, so a direct Rewards Balance: $xxxx should suffice (in theory). Basically put, rewards are a real payment for some task comp…
In setting " alarm" .

In setting alarm it is easy to get the “hours” on the computer.
How best to make my windows 10 bring up menu for “days” of the week?
How do i improve this app’s user interface? [on hold]
![How do i improve this app's user interface? [on hold]](https://uxsharelab.com/wp-content/themes/proxima/images/thumbnail-placeholder.gif)
I have created a desktop natural language user interface powered by artificial intelligence program. I call it Novos.
The GUI of Novos is like this:
What would be the most optimal layout for buttons in a desktop applicat…