Have you been told you need an apostille and have absolutely no idea what an apostille is or how to get one? SOS Apostille Services in San Bernardino County can complete the entire process for you. We even offer pickup service for an additional fee. See the pricing page for complete pricing details. What is an Apostille? Thanks to the Hague Convention of 1961, an Apostille helps by abolishing the Requirement of Legalization for Foreign Public Documents. The sole function of the Apostille is to certify the authenticity of the signature on the document; the capacity in which the person signing the document acted; and the identity of any stamp or seal affixed to the document.