30. An apparatus comprising at least one processor and at least one memory storing computer program code, wherein the at least one memory and stored computer program code are configured to, with the at least one processor, cause the apparatus to at least: obtain user provided information and context information associated with said user provided information, in consequence to any user operation against said apparatus, wherein said context information is related to at least one current condition of the apparatus at the time of said any user operation and includes calendar information from an electronic calendar implemented at said apparatus; obtain a first time information in accordance with said user provided information; obtain one or more calendar entries included in said calendar information, wherein each calendar entry comprises a second time information with a start time and an end time; compare said first time information with each of said second time information to identify matching calendar entries by assigning a membership function to each of said second time information and deriving a membership grade value from said membership function in accordance with said first time information, wherein each membership function comprises a function in time, which rises from zero value at a predetermined moment in time before said start time of a respective calendar entry and becomes zero value at a predefined moment in time after said end time of said respective calendar entry; obtain meta-information from each matching calendar entry of said one or more obtained calendar entries; assign meta-information obtained from said context information and said membership grade value to said user provided information, said membership grade value defining a measure which allows estimation of a reliability of a timely relatedness for retrieval; and direct storage of said user provided information and said meta-information in a history storage in order to establish an information history functionality; wherein said meta-information is employable for retrieval of said user provided information by matching request information of a retrieval request with said meta-information for selecting a user provided information being assigned to said meta-information matched to said request information.
30. An apparatus comprising at least one processor and at least one memory storing computer program code, wherein the at least one memory and stored computer program code are configured to, with the at least one processor, cause the apparatus to at least: obtain user provided information and context information associated with said user provided information, in consequence to any user operation against said apparatus, wherein said context information is related to at least one current condition of the apparatus at the time of said any user operation and includes calendar information from an electronic calendar implemented at said apparatus; obtain a first time information in accordance with said user provided information; obtain one or more calendar entries included in said calendar information, wherein each calendar entry comprises a second time information with a start time and an end time; compare said first time information with each of said second time information to identify matching calendar entries by assigning a membership function to each of said second time information and deriving a membership grade value from said membership function in accordance with said first time information, wherein each membership function comprises a function in time, which rises from zero value at a predetermined moment in time before said start time of a respective calendar entry and becomes zero value at a predefined moment in time after said end time of said respective calendar entry; obtain meta-information from each matching calendar entry of said one or more obtained calendar entries; assign meta-information obtained from said context information and said membership grade value to said user provided information, said membership grade value defining a measure which allows estimation of a reliability of a timely relatedness for retrieval; and direct storage of said user provided information and said meta-information in a history storage in order to establish an information history functionality; wherein said meta-information is employable for retrieval of said user provided information by matching request information of a retrieval request with said meta-information for selecting a user provided information being assigned to said meta-information matched to said request information. 32. The apparatus according to claim 30 , wherein the at least one memory and stored computer program code are configured to, with the at least one processor, cause the apparatus to obtain said user provided information at least in part by at least one of: receiving user input information being generated by user operation of any input of said mobile terminal device or receiving transaction information and/or communication information being received via any communication interface of said mobile terminal device, wherein at least one of said user input information, said transaction information or said communication information represent said user provided information.