Yup. I count my breaths in batches of 12 (batch count on the in breath, breath count on the out breath). So like "1-1, 1-2, ..., 1-12, 2-1, 2-2" and it works out that the batch count is the number of minutes I've been meditating. So if I want to meditate for 10 minutes I do 10x 12-counts. No technology needed, can be done anywhere, anytime.