By authorizing an e-Mandate it is only possible for this specific institution to debit your account, that you gave permission to.
Without interupting the order-process at an insurance-company, telephone-provider, supplier and such, you are able to revocable authorize these suppliers to charge your account with outstanding claims.Because ems is based on the online-banking-system of your bank the authorization takes place within an outmost secure and trusted environment, which you already know from your usual electronic banking transactions.