Eno takes a lot of the anxiety out of providing credit information to online sales sites. It works on many sites but definitely not all. Sometimes it will not recognize the form fields. Also some websites seem to detect the extension and reject the Eno card number forcing the user back to the underlying card number. Overall it is a very good and handy extension that I use to increase security whenever it is available.

Overall I am very happy with this and use it extensively. it works well.

Sometimes I have trouble getting it to open. It makes me log in every time -- even if I just used it a few minutes before. But overall I find it very useful and pretty seemless.

When it works, it's easy and I feel secure about credit card transactions on less mainstream web sites. It's sometimes cranky to sign in (I don't leave it signed in) and occasionally I have to give up on it. Seems to work more reliably recently (maybe because I'm on a newer laptop). Worth trying.

I've rarely had technical problems with the extension itself. Sometimes the auto-paste doesn't work because of the web page's cart design, but it's easy enough to copy and paste. I only gave it a 4 star because I don't like having any extension collecting data about every site I visit. What I do is I disable the extension any time I'm not actually making a purchase, and that works just fine.

When this extension works, it's great! It helps protect my security online.

However, it seems to regularly get stuck authenticating into Capital One, freezing up and preventing me from logging in. Sometimes I'll launch the checkout page in Chrome (blech!) and use the extension in Chrome instead, which seems to be less prone to freezing up.

Pretty handy. It's a little finicky, maybe because I'm on Linux, and gets "stuck" once in a while. Sometimes I have to go log in to CapOne in another window before the extension will work. But very handy for keeping CC numbers separated and limiting the blast radius of an exposure. I especially like the ability to turn virtual cards off when not in use or at a future date - E.G. when signing up for a free trial service I do not intend to renew.

It's been better on Firefox lately but still freezes sometimes and stops working. Works about 80% of the time though.

Great extention

Needs a bit of fiddling around. What worked for me was logging into capitalone.com before setting the extension up.

FIX FOR ENO NOT WORKING:

The Problem - The probable reason for Eno extension not working is that you need to log in. Eno pops up a window to log into your CapitalOne account. The popup window closes rapidly and apparently fails to log you in so Eno simply doesn't work.

The Solution - The solution for me has been to add an exception to your browser's security policy. Settings -> Privacy & Security. Then scroll down to Cookies and Site Data. Click Manage Exceptions and add an exception for "https://verified.capitalone.com". Now try clicking the Eno login button again. If it still doesn't work, refresh the page.

Temp Fix For Eno Firefox Popup Login Disappearing - I just open in a separate browser tab the url displayed briefly by the Eno popup -- https://verified.capitalone.com

Once logged in, Eno seems to work. Just a work around, but CapitalOne should fix the quick disapperaing login popup problem.