Active Merchat Paypal Access Token?

I'm using active merchant to interact with paypal, and I need offline access of users' paypal account. E.g. send money on their behalf asynchronously.

Is it possible to keep an access token from Paypal, and authenticate with that instea开发者_如何学God of storing the user's paypal email and password?

Rails 3 + Ruby 1.8.7

Not sure about the Active Merchant gem but in general yes - you can use the PayPal Permissions Service API to collect authorization from a merchant (as an access token) to make API calls on behalf of them. You can find more details about the API here: https://www.x.com/developers/paypal/products/permissions