Max 21 AG, formerly MAX21 Management und Beteiligungen AG, is a Germany-based technology holding that specializes in the areas of information security and digital communications. Among others, the Company holds interests in Binect GmbH and KeyIdentity GmbH. Binect GmbH is a provider of encrypted communication, and develops software that allows or collect and coordinate e-mails from various platforms. In cooperation with Deutsche Post AG, Binect GmbH offers a hybrid business communication and postal distribution solution, including printing, enveloping, franking and delivery. KeyIdentity GmbH provides digital access and identity security solutions. It is a supplier of the LinOTP Product Suite, which is used in adaptive multi-factor authentication.