Abstract: A method for authorizing automatic login of a user to a reserved area of an information resource includes, at a first user device, connecting to a web server for retrieving the information resource, and sending to an authentication server an identifier of the information resource and an identifier of the user. At the authentication server, based on the identifiers of the information resource and of the user, an authorization request is sent to a second user device associated with the user, and which stores access credentials for logging in the reserved area. At the second user device, the user is notified of the authorization request, and upon confirmation of the authorization request by the user on the second user device, access credentials are made available to the web server. At the web server, automatic login to the reserved area is performed based on the access credentials.

Abstract: A method for authorizing automatic login of a user to a reserved area of an information resource includes, at a first user device, connecting to a web server for retrieving the information resource, and sending to an authentication server an identifier of the information resource and an identifier of the user. At the authentication server, based on the identifiers of the information resource and of the user, an authorization request is sent to a second user device associated with the user, and which stores access credentials for logging in the reserved area. At the second user device, the user is notified of the authorization request, and upon confirmation of the authorization request by the user on the second user device, access credentials are made available to the web server. At the web server, automatic login to the reserved area is performed based on the access credentials.

Abstract: The invention is concerned with an improved process for preparing paraffin-sulfonic acids containing from 10 to 20 carbon atoms, as well as their salts. The process comprises the initial reaction of sulfo-oxidation of the concerned mixture of n-paraffins, the removal of unreacted n-paraffins from the reaction mixture, the removal of the excess of SO.sub.2 from said mixture, and the removal from the reaction mixture of the therein formed sulfuric acid, with the simultaneous recovery of the end product.After the removal of SO.sub.2, to the reaction mixture hydrogen peroxide is added and the so obtained solution is submitted to one treatment selected from among the following treatments:(a) addition of an alcohol with a number of carbon atoms comprised within the range of from 4 to 8;(b) heating up to a temperature comprised within the range of from 50.degree. to 150.degree. C. and vacuum distillation under a residual pressure comprised within the range of from 5 to 500 mm.sub.