➀ CSignum secures £6m Series A funding to develop EM-2 products using electromagnetic field signaling (EMFS) for sub-surface communication across water, ice, and concrete;

➁ Applications include marine monitoring, subsea infrastructure security, and environmental sensing, supported by investors like Archangels and Scottish Enterprise;

➂ Plans to expand operations in the UK, USA, and EU with new hires and enhanced cloud-based data services for underwater IoT networks.