Fuente: Wipo "digitalization" For digitally signing a document, an apparatus, method, and computer program product are disclosed. The apparatus includes a processor and a memory that stores code, executable by the processor, including code that: detects a trigger, searches a digital document for a user signature in response to the trigger, and applies a digital signature to the digital document in response to the digital document including a user signature. In some embodiments, the digital signature may be based on the user signature.