A method for producing a multilayer security and identification document by the following steps: a. providing an inlay layer made of thermoplastic and temperature stable foil material made of glycol modified polyethylene terephthalate (PETG) or polycarbonate; b. imprinting the inlay layer with at least one colour picture portion by means of printing ink using inkjet technology; c. providing an overlay layer made of thermoplastic and temperature stable foil material made of glycol modified polyethylene terephthalate (PETG) or polycarbonate; d. applying security features (14a, 14b) in form of an offset print, Guilloche, micro text or security colours on a side of the overlay layer; e. imprinting the opposite side of the overlay layer by a solvent-based activator in an activator region, such that, after uniting the overlay layer and the inlay layer, the activator region with the at least one colour picture portion is at least partially covered, wherein the activator is thermoplastic and includes synthetic resins with organic solvents, and ingredients of the activator are selected such that they are independent from foil material used for the overlay layer and the inlay layer; and wherein at least the activator and the colour ink form no clear boundary line at locations where they are adjacent to each other, and wherein the ingredients of the activator are thermoplastic and heat resistant until 200° Celsius; f. uniting the overlay layer and the inlay layer, such that the at least one colour picture portion of the inlay layer is at least partially covered by the region imprinted by the activator of the overlay layer; laminating and cooling the overlay layer and the inlay layer, wherein both layers are laminated together such that the colour picture and the activator contact each other and thermally react together by correspondingly selected pressure, temperature and time parameters of the lamination, which results in a compound, a composite or a mixture of the activator and the colour ink, and wherein both layers unite to a layer composite; and g. separating the one or more security or identification documents of the layer composite. a. providing an inlay layer made of thermoplastic and temperature stable foil material made of glycol modified polyethylene terephthalate (PETG) or polycarbonate; b. imprinting the inlay layer with at least one colour picture portion by means of printing ink using inkjet technology; c. providing an overlay layer made of thermoplastic and temperature stable foil material made of glycol modified polyethylene terephthalate (PETG) or polycarbonate; d. applying security features (14a, 14b) in form of an offset print, Guilloche, micro text or security colours on a side of the overlay layer; e. imprinting the opposite side of the overlay layer by a solvent-based activator in an activator region, such that, after uniting the overlay layer and the inlay layer, the activator region with the at least one colour picture portion is at least partially covered, wherein the activator is thermoplastic and includes synthetic resins with organic solvents, and ingredients of the activator are selected such that they are independent from foil material used for the overlay layer and the inlay layer; and wherein at least the activator and the colour ink form no clear boundary line at locations where they are adjacent to each other, and wherein the ingredients of the activator are thermoplastic and heat resistant until 200° Celsius; f. uniting the overlay layer and the inlay layer, such that the at least one colour picture portion of the inlay layer is at least partially covered by the region imprinted by the activator of the overlay layer; laminating and cooling the overlay layer and the inlay layer, wherein both layers are laminated together such that the colour picture and the activator contact each other and thermally react together by correspondingly selected pressure, temperature and time parameters of the lamination, which results in a compound, a composite or a mixture of the activator and the colour ink, and wherein both layers unite to a layer composite; and g. separating the one or more security or identification documents of the layer composite.