I tried to recommend the Eno credit-card-number-generator feature to my iPhone friends, but we were disappointed to discover that the iOS Capital One banking app does NOT provide this functionality. I have enjoyed using Eno on my Android phone since mid 2019 and love it. Why the delay in implementing it on iPhone?

update 8/2023
broken again, still works in Chrome

update 2/2022 I've been using eno on FF ESR, but Mozilla ended support for the version of ESR I'm running, so I tried to install eno on the current release version of FF. As others have reported, it's completely broken, even with a capital one tab open with Adblock disabled. I don't understand why the 5-star Chrome version works perfectly and the FF version periodically fails completely.

I thought I was the only one having problems with signing in until I read all the other one-star reviews. The extension worked perfectly at first. Then I had to make an out-of-town trip and I made some changes in my contact info, but I never deleted my primary SMS phone. Now neither the extension nor online banking will recognize any of my contact numbers as legit and both online banking and eno completely lock me out after a couple tries at texting to a number that has been on file unchanged for a week. Tech support told me a) wait for the numbers to propogate through the system (they never did) and b) to uninstall and reinstall the extension, which made things even worse because uninstalling wiped out all the user data stored in my Firefox profile and since the extension doesn't recognize my contact phone, it became useless. I restored my Firefox profile from a backup to regain partial access to eno functionality but as I am locked out of the system, I have to wait 24 hours to see if I can get the extension working in Chrome. Tech support claims that the problem is that I'm using my spouse's phone (same billing address, different name), but after reading all the one-star reviews with the same issue, I'm thinking they don't actually know what the problem is.

It sucks to see the bad reviews. This add-on has been wonderful for me. I have had no problems logging in, other than forgetting my password. It has been improved as far as I can tell because it has been able to detect multiple credit card accounts and let you select which one it makes virtual cards for. You can easily manage your virtual cards from the link the add-on provides.

Someone said they did not like how you could only create virtual cards from the add-on while making a purchase. I think this is a good way to restrict creating these cards so that you only do so with an explicit purpose.

Anyway, great stuff. I wish Mozilla would say why they cannot label this as a recommended extension.

When it works, it's great. Unfortunately it consistently breaks and can't log in. Get the something went wrong error. Works fine in my installed chrome based browsers.

I was loving this add on until today when I went to buy something online and I could not get past "Good news–you're ready for an update to your browser extension. All you have to do is fully quit and restart your browser, and you'll be all set to keep using virtual numbers"

No amount of restarting the browser would "update" the plugin nor did clearing cache or going into fire Fox add on to update this add on. Calling Capital One was the next step and being told there was nothing wrong on their end and to remove and reinstall the add on. I did that and it worked.

Frustrating to have to spend the time to get it to work.

Update 07-23-2024. Fire Fox & Capital One App updates have been not an issue with using this app. Love it.

Excellent source of privacy for credit card masking during online purchases and bill pay. Thank you!

Couldn't make it past the first step. Hit "agree" and then nothing- just stuck on "continuing" forever. Uninstalled 5m later.

Yeah, no thanks....
Who has the time to repeat the same log in errors and issues that many others users have reported & endured for months???
The one stars are gaining in number faster than the other stars, just saying....
Really wanted this to work, hope you guys can figure things out...

Excellent--It makes it so easy-TY

I'm so excited.this is the best way of watching your spending and not losing your card.thankyou

does not work on Amazon site using Chrome

it's awesome I can lock or unlock virtual numbers anytime without affecting your other spending. thank you Capital One.

The whole reason I got the Venture card was to have the ability to make virtual cards with Eno but two weeks after receiving the card I still cannot access Eno. For some reason it cannot validate my phone number even though it is the one I listed in my profile on the Capital One website. Multiple calls to tech support has not helped. They keep telling me I just have to wait until it propagates through the system. Two weeks is not enough?? This card is useless and is going back. I have given up and will order a card from Citi Bank

Does not work with TracFone, Google voice, Comcast voice as verification is dependent on sms text. Many other security and functional limitations as no $ or time limit. This a poor reflection on Capital One. I will be switching to Citi which supports virtual cards.

BEWARE: Major bug in core system app, not just in user app. When you implement a lock on one of your virtual number and status shows that it is locked and a locked icon appears, and the word LOCKED appears on the screen. IT IS NOT LOCK. charges still go thru 10 days later. Tech support couldn't care less.

I originally gave this a bad review and I almost sent the card back. But after 2 months, I have mostly changed my mind. I'm leaving my old review below, but here is a new perspective and 3 more stars, for 4 stars total.

I had no trouble installing this or using it many many times afterwards. It has worked, as far as I can tell, exactly as CapitalOne wants it to work. It was different from my Bank of America Shop Safe, so at first I hated it. But I have found a way to use it well. It has a drawback I will describe, but in some ways its also better. Here is how I use it.
1. Keep the extension disabled, except when you need a new virtual credit card number. That way it cannot spy on you at every website you go to. When you need one, enable it, get the virtual card number and record it in your password vault. Disable the extension. The only problem here is that you must have a website open to "attach" the virtual number to. I have been able to occasionally get a number that is not yet attached to a site, but I cannot repeat it. When I can, I will add that info here. But you are not actually limited to that website. You can even use the number over the phone. It appears that the number is permanently attached to the first credit processor that uses it, like ShopSafe was. This is very useful, because giving number over the phone to a human is much more dangerous than typing it into a computer. (CapitalOne - Please support getting numbers that are independent of a website!! Thanks!)

Your charge goes pending at first, so you cannot delete virtual card right away. But every time you get a new one, check for old ones that you can delete. This was my substitute for being able to define an expiration date in ShopSafe. Its not automatic, and you cannot set a maximum charge amount, but it seems good enough. That said, I decided I did not actually have to delete them every time. As long as I knew who I gave it to, if I got any bogus charges, I would know where the problem was. And since the number is probably locked to the first card processor that uses it, it is unlikely that it could be used by anyone who stole it in an IT breach from a company where I used it. I could probably have done this with ShopSafe too, but didnt realize it. Now I feel comfortable using it for recurring charges also.

So...I am pretty happy right now. If I stopped being able to use a number over the phone, I would probably go looking for another credit card to replace this. Using it over the phone is not officially supported and this is the main reason I only have it 4 stars. The other reason is that I have to enable and disable it every time I use it. But thats not too onerous. Thanks Capital One! Sorry for the misunderstanding at first....

*********** ORIGINAL REVIEW ***********
If you are looking for a ShopSafe replacement (recently cancelled by Bank of America) Eno based virtual credit card numbers from a CapitalOne card are not for you. These virtual credit card numbers do not give you the same protections from online fraud and do not work the way you would expect. First, you must use this app to create and manage virtual numbers. There is no website that I can find. This app is "always on" and watching your browsing activity to look for a site it thinks you might want a virtual credit card number for. So your browsing activity is no longer private. You cannot create a virtual card number until the app sees you on such a site. I was able to activate it on a dummy site, but then it links that URL to the credit card number. It set the expiration date of the virtual credit card 5 years into the future, oddly, past the expiration date for my real Capital One credit card. You cannot set a virtual number to expire after a certain number of months, like you could for ShopSafe numbers. Likewise, you cannot set a maximum charge amount for a virtual number, so anyone who gets this can charge as much as they like. So Eno virtual credit card numbers don't protect you from an unscrupulous online vendor, like ShopSafe did. In fact, if you read the Terms and Conditions, you will see that the virtual number may not even be locked to a specific merchant, like ShopSafe was. They appear to be testing this, but "...a VC# you create for use Merchant A should work at Merchant A, but may or may not work at Merchant B." So in my opinion, this does not really protect me very much. In fact, since there are no limits on the merchants and you cannot limit the maximum amount nor set a short expiration date, it may make you more vulnerable to fraud. If someone steals a virtual number from a company you gave it to, they can use it just as if they stole a card from your wallet. The only reasonable thing you can really do is delete the virtual number, but that assumes you know it was stolen. We usually dont find out about that until long long after it happens.

In fairness, unlike other reviews, I will say that I had no problems using my phone number to validate (via text messages) and get this set up. Setup worked just fine.

I am thinking carefully, because I really want a ShopSafe alternative, but this credit card will probably go back.

I'm a long-time Capital One Banking customer. After BofA discontinued their virtual credit card numbers ("ShopSafe") I opened a Capital One Savor One card account for the SOLE PURPOSE OF USING VIRTUAL NUMBERS FOR ONLINE SHOPPING. After receiving the card and attempting to set up Eno I was frustrated by the inability to log into my account / verify my account, which requires the ability to receive an SMS text. I do not have a mobile phone, and the Google Voice account that I have isn't "acceptable" to the Eno verification process. Every other financial account or service that I have (and there are almost a dozen of them, not including the IRS..) allows me to verify either by a phone call, a hard-copy mailed PIN, or an email sent to the address on file. It appears that Capital One doesn't care much about their customer's needs or requirements, since the only option being provided for Eno verification is the SMS/text of an identifier. After an hour with Tech Support and an escalation to a supervisor I've been told "this is the way it is". So non-mobile phone users are automatically excluded as Eno users. That is blind thinking.

Since I can't use Eno I've decided to open a competitor's card account (the one remaining provider of virtual card numbers), and while I'm at it I may as well move my banking accounts as well. I already have too many accounts at different institutions.

If this isn't fixed in 90 days I'll have no need for the Savor One card. After I've earned the $150 spiff that I get for the new card I'll be closing that account. Thanks Capital One for the $150 and for the memories.

ENO works sometimes and it doesn't sometimes. When it doesn't I can't find a way to generate a virtual number manually so I'm left with no other options but to use my credit card numbers instead of virtual numbers. I would like to find a way to be able to use virtual numbers all the time.

The best feature about this is that I can't enable access on my account.