Apparatus, methods and computer programs for identifying characteristics of biological samples

An apparatus comprising:

• at least one processor;
• and
• at least one memory,
• the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
• provide a plurality of electrical input signals to a biological sample;
• receive a plurality of electrical output signals from the biological sample where respective ones of the electrical output signals correspond to respective ones of the electrical input signals and in response to one or more electrical properties of the biological sample, the electrical output signals have a respective one or more electrical property values;
• and
• control the electrical input signals so that the plurality of electrical output signals from the biological sample comprise one or more general features and one or more sub-features where the one or more general features and the one or more sub-features are usable for identifying one or more characteristics of the biological sample.

A method comprising:

• providing a plurality of electrical input signals to the biological sample;
• receiving a plurality of electrical output signals from the biological sample where respective ones of the electrical output signals correspond to respective ones of the electrical input signals and in response to one or more electrical properties of the biological sample, the electrical output signals have a respective one or more electrical property values;
• and
• controlling the electrical input signals so that the plurality of electrical output signals from the biological sample comprise one or more general features and one or more sub-features where the one or more general features and the one or more sub-features are used for identifying one or more characteristics of the biological sample.

A non-transitory computer readable medium comprising program instructions stored thereon for causing an apparatus to perform at least the following:

• providing a plurality of electrical input signals to the biological sample;
• receiving a plurality of electrical output signals from the biological sample where respective ones of the electrical output signals correspond to respective ones of the electrical input signals and in response to one or more electrical properties of the biological sample, the electrical output signals have a respective one or more electrical property values;
• and
• controlling the electrical input signals so that the plurality of electrical output signals from the biological sample comprise one or more general features and one or more sub-features where the one or more general features and the one or more sub-features are usable for identifying one or more characteristics of the biological sample.