A processor-implemented method comprising: providing a plurality of perimeters (250, 252) on the electronic device, wherein each of the perimeters (250, 252) is associated with a separate operating environment, a separate partition in a memory of the electronic device and may be associated with one or more applications, files and/or data objects (226, 228), wherein each of the data objects (226, 228) has an associated object access application stored in a persistent memory of the electronic device configured for accessing the data object (226, 228); and wherein the perimeters (250, 252) include a low-security perimeter and a high-security perimeter; associating one or more data objects with the low-security perimeter and one or more data objects with the high-security perimeter; and based on the associations between the one or more data objects (226, 228) and the one or more perimeters (250, 252), selectively allowing one or more of the data objects (226, 228) to be referenced on an unlock display screen, wherein the selectively allowing comprises: allowing a first data object associated with the low-security perimeter to be referenced on the unlock display screen by displaying, in response to user selection of the first data object, a second screen comprising a selectable option to reference the first data object, and preventing a second data object associated with the high-security perimeter from being referenced on the unlock display screen by displaying, in response to user selection of the second data object, a third screen, not comprising the selectable option to reference the second data object. providing a plurality of perimeters (250, 252) on the electronic device, wherein each of the perimeters (250, 252) is associated with a separate operating environment, a separate partition in a memory of the electronic device and may be associated with one or more applications, files and/or data objects (226, 228), wherein each of the data objects (226, 228) has an associated object access application stored in a persistent memory of the electronic device configured for accessing the data object (226, 228); and wherein the perimeters (250, 252) include a low-security perimeter and a high-security perimeter; wherein each of the data objects (226, 228) has an associated object access application stored in a persistent memory of the electronic device configured for accessing the data object (226, 228); and wherein the perimeters (250, 252) include a low-security perimeter and a high-security perimeter; associating one or more data objects with the low-security perimeter and one or more data objects with the high-security perimeter; and based on the associations between the one or more data objects (226, 228) and the one or more perimeters (250, 252), selectively allowing one or more of the data objects (226, 228) to be referenced on an unlock display screen, wherein the selectively allowing comprises: allowing a first data object associated with the low-security perimeter to be referenced on the unlock display screen by displaying, in response to user selection of the first data object, a second screen comprising a selectable option to reference the first data object, and preventing a second data object associated with the high-security perimeter from being referenced on the unlock display screen by displaying, in response to user selection of the second data object, a third screen, not comprising the selectable option to reference the second data object. allowing a first data object associated with the low-security perimeter to be referenced on the unlock display screen by displaying, in response to user selection of the first data object, a second screen comprising a selectable option to reference the first data object, and preventing a second data object associated with the high-security perimeter from being referenced on the unlock display screen by displaying, in response to user selection of the second data object, a third screen, not comprising the selectable option to reference the second data object.