Lol – I think you mean bumping with not dumping 🙂 And yes, both of you need to be running the app.

Good stuff.

Hi, this is David, co-founder of Bump Technologies.

Don't Worry! All you did was share *your own* contact information with the person. You didn't share any details other than what you have entered in your Contacts for yourself. For most people, these are name, phone number, email, etc.

To be sure that you didn't share any sensitive information, just open Bump and click on the settings button, then click "view/edit" to see exactly what details you have entered into your contact card.

Please email us at support@bumptechnologies.com with any other questions.

So it sounds like what happened is you ended up sharing your entire contact list with this person. Some answers and suggestions for you:
— There is no reason that this person should be able to access anything directly on your phone.
— But … if your contacts include an entry that reveals your own email accounts login information, then of course this other person would now have the ability to access your account/s on their own device or PC. So the question is did you have any contact entries that list your login info for email accounts or elsewhere.
— I think the key question in terms of what you do next is how well do you know the person you bumped with? Do you trust them? If you know them well and trust them A LOT, then the simplest thing might be to just ask them to please remove ALL the information you accidentally shared.
— If you do not know the person and trust them a lot, then I would suggest you start changing any passwords that were contained in your Contacts.
— You would also need to give a great deal of thought o how you handle the fact that information for all of your contacts has been shared to this person. How much info did you have for others? Do you need to inform them that their information has been compromised?

Oh, good question – I've never tried that yet when testing it. Sorry.