One of the highest profile and busiest trade events in Barcelona, it seems Mobile World Congress is being used as leverage in a labour dispute. 

Spain's main public transport union, the TMB, is threatening to strike, potentially affecting bus and metro availability during the show. 

Negotiations between the union and Spanish government are ongoing. 

Event organiser, the GSMA has released an official statement, conveying its hope that the threatened strike won't go ahead, while re-assuring people it's also making contingency arrangements.

Plan b

"While we are hopeful that a strike can be averted prior to the start of Mobile World Congress, the GSMA has developed a comprehensive contingency plan and is ready to activate this plan should it become necessary," reads the official statement from GSMA CEO John Hoffman.

"The contingency plan outlines alternate transport options for getting to and from the venue, and also describes the additional security measures the police are putting in place to ensure the safe passage of our attendees.

"We will also be taking steps to help attendees enter the venue more quickly, including expanding the access points to the Fira and increasing the registration points onsite and at the airport."

If the strikes can't be averted, the GSMA will reveal its plan on Saturday 25 February via its website. 

It suggests - where possible - people pick up their badges over the weekend.

You may also want to keep an eye on its Twitter feed for more regular updates on the situation.